Volume 2024, Issue 207 p. 33-45
RESEARCH ARTICLE
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Dual credits and the community college pathway toward STEM degrees

Xiaodan Hu PhD

Corresponding Author

Xiaodan Hu PhD

Department of Education Policy and Leadership, Southern Methodist University, Dallas, USA

Correspondence

Xiaodan Hu, PhD, Southern Methodist University, Ste. 345, 3101 University Blvd, Box 750114, Dallas, TX 75275, USA.

Email: [email protected]

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Jay Menees

Jay Menees

Department of Human Development and Organizational Studies, University of Florida, Gainesville, USA

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Abstract

Community colleges are an important entry point and pathway for students to obtain a postsecondary degree in science, technology, engineering, and math (STEM) fields. To broaden STEM participation and increase STEM persistence, it is important to support community college students’ college-level course completion and academic performance. This article explores whether earning dual credits in high school is related to community college students’ probability of completing any STEM/career and technical education (CTE) degree or persisting in a STEM program at a 4-year institution. Using a nationally representative dataset, we find that earning dual credits, especially in the subject of math/science, is positively associated with community college students’ STEM/CTE success. We conclude the article with implications, recommending practitioners to highlight the benefits of dual credit on STEM success, streamline high school collaborations into STEM access and success strategy, and reimagine the role of CTE programs in STEM success for community college students.

INTRODUCTION

Equitable access to and success in science, technology, engineering, and math (STEM) fields at the postsecondary level has been a persistent issue in the United States. The number of STEM graduates is especially low for traditionally underrepresented college students, such as students that are women, racially minoritized, first-generation, and from low-income backgrounds (Chan & Wang, 2018; Wang, 2013, 2015). To identify effective interventions, previous studies have attempted to target solutions in K12 to remediate disparities in college students’ STEM outcomes (Dasgupta & Stout, 2014; van den Hurk et al., 2019). Given the national goal to broaden and equalize STEM participation for traditionally underrepresented students and support their STEM success in postsecondary education, the focus on community college students’ STEM success builds on prior scholarship to challenge the linear concept of STEM success (e.g., the “leaky pipeline” metaphor). In fact, it is not unusual for traditionally underrepresented students to take STEM pathways starting at a community college (e.g., take developmental courses, choose a Career and Technical Education [CTE] program, or transfer upwardly from a community college) to gain STEM momentum and pursue a bachelor's degree in STEM (Chan & Wang, 2018; Fealing et al., 2015).

Community colleges are an important entry point and pathway toward STEM success. According to the Community College Research Center, 12% of all associate degrees granted in 2019–2020 were in STEM fields, and 14% of community college students who started in Fall 2010 went on to earn a bachelor's degree in a STEM field within 6 years of initial enrollment (Fay, 2022). Despite additional access via the community college pathway, community college students face major challenges in achieving STEM success. For example, 69% of associate-degree-seeking students who entered STEM majors between 2003 and 2009 had left their STEM fields by Spring 2009 (Chen & Soldner, 2013). Compared to college students starting at 4-year institutions, students attending a community college initially were less likely to attain a bachelor's degree in STEM in general (Hu & Ortagus, 2019). Among community college transfer students across disciplines, their likelihood of completing a bachelor's degree is similar, regardless of if they have completed an associate degree prior to transfer (Wang et al., 2017).

While the community college to 4-year institutions transfer pathways have been the primary focus to broaden STEM participation (Fink et al., 2024; Hu & Ortagus, 2019), few studies have explored the potential of dual credit courses to increase STEM success for students who start at community colleges. Dual credit courses refer to college coursework that students complete while enrolled in high school. It has been widely noted that students who participate in dual credit courses experience positive benefits in college, such as college enrollment (Karp, Calcagno et al., 2007; Lee et al., 2022), persistence (Giani et al., 2014; Struhl & Vargas, 2012), and degree attainment (Giani et al., 2014; Henneberger et al., 2022). Particularly for college students’ STEM success, dual credit courses can reduce reliance on developmental math, lead students into higher levels of math courses, and increase STEM major intent (Hemelt et al., 2020; Minaya, 2021). While these benefits are noted in the literature for college students broadly, studies that examine the relationship between dual credit course-taking and STEM outcomes for community college students are critically understudied.

The purpose of this article is to explore the effect of dual credit course-taking on STEM success, which is defined as either completing an associate or bachelor's degree in STEM/CTE or persisting in STEM at a 4-year institution, for students who began at a community college. The research questions that inform this study are:
  1. Is dual credit course-taking associated with STEM success for students who started at a community college?

  2. Is dual credit course-taking in math/science associated with STEM success for students who started at a community college?

LITERATURE REVIEW

In this section, we first review the current literature on factors contributing to college students’ STEM success, with a focus on STEM-aspiring community college students. Next, we emphasize the potential influence of gateway college-level courses on community college students’ upward transfer and degree attainment at the sub-baccalaureate level in both CTE programs and STEM fields.

What contributes to college students’ STEM success?

Prior research has explored factors that contribute to students’ STEM success. Many precollegiate factors influence a student's decision to choose a STEM major in college, including high school students’ math and science identities, self-efficacy, math achievement, and intent to major in STEM (Moakler & Kim, 2014; Wang, 2013; Zhang et al., 2021). Having a parent in a STEM occupation, the number of credits earned in advanced placement (AP) science courses, and different measures of academic performance in math (e.g., scholastic assessment test [SAT], GPA) are positively associated with choosing a STEM major (Crisp et al., 2009; Moakler & Kim, 2014; Starobin et al., 2016; Zhang et al., 2021). Conversely, attending a high school with a higher percentage of students in free and reduced lunch programs, being a woman, or being racially minoritized was associated with a decreased probability of choosing a STEM major (Crisp et al., 2009; Moakler & Kim, 2014; Zhang et al., 2021).

Many of the same sociodemographic and academic preparation factors related to declaring a STEM major continue to influence students’ STEM persistence and degree completion in college. Women and racially minoritized students were less likely to complete a bachelor's degree in STEM when compared to men and White students (Chen & Soldner, 2013; Mau, 2016). According to at least one national study, however, while being a woman was negatively associated with persisting in an associate degree in STEM, women at 4-year institutions in a STEM field were not significantly less likely to persist in their degree than their men counterparts (Chen & Soldner, 2013). Maltese and Tai (2011) found that high school students with higher ratings of their math and science abilities and who completed more science courses were more likely to graduate with a STEM degree. In another study, perceived preparation in math was associated with increased odds of persistence for first-generation students in STEM majors (Dika & D'Amico, 2016). Once students enter college, higher first-semester grade point average (GPA) and first-year college GPA are also associated with a higher likelihood of persisting in STEM (Crisp et al., 2009; Dika & D'Amico, 2016; Mau, 2016). STEM course-taking and performance in the first year, such as the number of STEM credits taken, the level of math courses taken, and performance in STEM classes are all related to college students’ persistence and degree completion in STEM at the associate and baccalaureate level (Chen & Soldner, 2013). While college students that are first-generation, transfer, and who needed developmental education were less likely to persist in STEM at the bachelor's level (Mau, 2016), students receiving a low level of grant aid (versus no grant aid) can also have a lower likelihood of completing a bachelor's degree in STEM depending on their initial propensities to major in STEM (Wolniak, 2016).

For STEM-aspiring community college students in particular, their academic performance, course completion, and course-taking patterns can contribute to transfer students’ STEM success at 4-year universities. Community college students who began at the lowest level of math or science courses, who were more likely to be women and racial minorities, were less likely to persist in higher STEM curricula than their peers (Bahr et al., 2017). Community college students that experience math misalignment, especially by being placed into a lower-level math class, are less likely to complete transferable STEM courses and less likely to persist in a STEM pathway (Park et al., 2021). Moreover, Fink et al. (2024) found that completing calculus in the first year of college was positively associated with students’ probability of successfully transferring up to a 4-year institution and completing a bachelor's degree in STEM. Similarly, enrollment in developmental math is negatively associated with community college students’ multiple STEM outcomes including persistence, credit accumulation, academic performance, upward transfer, and graduation (Cohen & Kelly, 2020). More recent developmental education reforms, such as co-requisite courses, are promising to improve students’ STEM outcomes (Logue et al., 2019; Park-Gaghan et al., 2023). Building academic momentum, which includes multiple measures of a college student's academic progress during the early phase of college (such as immediate enrollment after high school graduation, the number of credits earned in the first semester), especially through Math and Science courses, can significantly contribute to community college students’ STEM success (Chan & Wang, 2018; Wang, 2015, 2020).

Community college attendance, dual credit courses, and students’ STEM success

Community college students who aspire to transfer to a 4-year institution and earn a bachelor's degree in STEM must navigate multiple systems associated with transferring into a 4-year institution, generally, and persisting in or transferring into a STEM field, specifically (Bahr et al., 2017; Fink et al., 2024; Park et al., 2021). Due to persisting structure inequities, community college students’ social identities and social capital are associated with post-transfer success in STEM (Jackson et al., 2013; Jackson & Lanaan, 2015; Malcom, 2010; Reyes, 2011; Starobin et al., 2016). Despite historically underrepresented students (for example, students that are racial minorities, from lower socioeconomic backgrounds) building social capital through positive faculty and community interactions (Reyes, 2011; Starobin et al., 2016), the transfer experience into a baccalaureate-level STEM program remains to be saliently negative (Packard et al., 2012). For example, in Reyes's (2011) study, transfer students that are racially minoritized women experienced microaggressions from faculty that made them feel that they did not belong at the institution and expressed feeling ignored by classmates.

National studies on community college STEM pathways tend to view STEM success as successful transfer into a 4-year STEM major and completion of a bachelor's in a STEM program, with little focus on sub-baccalaureate degree completion in a STEM field (Bahr et al., 2017; Fink et al., 2024; Hu & Ortagus, 2019; Wang, 2015; Zhang, 2022). However, beyond upward transfer, obtaining an associate degree in either STEM or CTE fields provides community college students with the skills and credentials to build their academic and career trajectories in STEM (Lowry & Thomas-Anderson, 2017; Sublett & Tovar, 2021; Van Noy & Zeidenberg, 2014). For example, Lundy-Wagner and Chan (2016) mapped the CTE programs offered by the Virginia Community College System to clarify the critical role community colleges play in supporting students’ labor market success with both career-oriented programs and transfer-oriented programs under the larger STEM umbrella. While researchers have developed a specific conceptual model for CTE student success (Hirschy et al., 2011), policymakers and practitioners use secondary and postsecondary CTE programs to increase interest in STEM fields, teach STEM competencies, and promote completion of CTE credentials (Advance CTE, 2013; Smith, 2017).

Taking college-level courses in high school can particularly benefit students’ academic progress in STEM fields. For example, offering a dual credit advanced college algebra course in Tennessee was associated with a lower math remediation rate and increased enrollment in precalculus and AP math courses at treated high schools (Hemelt et al., 2020). Similarly, taking college algebra in high school positively affected college enrollment and graduation, but taking any dual credit course in general was not significantly related to any college success outcomes (Speroni, 2011). Increasingly each year, many high school students are initially introduced to college through dual credit courses with over 1 million dually enrolled students attending community colleges in 2021 (Education Commission of the States [ECS], 2022; Fink, 2023). The growth of dually enrolled students attending community colleges has significantly outpaced other sectors and it has increased by more than 500% over the last 25 years (ECS, 2022; Fink, 2023). Focusing on students’ STEM success, Minaya (2021) found that students who took dual credit college algebra were 9 percentage points more likely to major in STEM in college. The positive benefits of completing dual credit college algebra in high school were greater for Black and Hispanic students who were more likely to major and persist in STEM. Hu and Chan (2023) also noted the positive relationship between dual credit course-taking and majoring in STEM, especially at the baccalaureate level. This study sought to further examine if dual credit course-taking can support community college students’ STEM persistence and completion, providing practical implications for community college leaders and practitioners.

METHODS

This study used the nationally representative dataset of the High School Longitudinal Study of 2009 (HSLS:09) to answer the research questions. HSLS:09 contains data of 23,500 ninth graders in the nation in 2009, with additional data waves in their eleventh grade (2012), twelfth grade (2013), and 3 years (2016) and 4 years after high school graduation (2017), respectively. We restricted the analytical sample to 2550 students who started their postsecondary education at a public 2-year college by 2017. Among these 2550 students, 760 students took dual credit courses in high school, and 160 students reported taking at least one dual credit course in math/science.

In this study, we dichotomously defined community college students’ STEM success as earning any degree in a STEM/CTE field or still enrolled at a 4-year university in a STEM field, using the National Science and Mathematics Access to Retain Talent (SMART) grant definition of STEM. The treatment variable was first defined as any dual credit course-taking, and then defined as dual credit course-taking in math/science in particular. Given structural inequalities, dual credit course-taking can be subject to students’ pretreatment characteristics (Lochmiller et al., 2016; Museus et al., 2007). We used inverse propensity score weighting (IPSW) to adjust for potential self-selection bias to enhance the comparability between dual-credit students and non-dual-credit students (Guo & Fraser, 2015). Controlling for a set of pretreatment variables (e.g., demographic characteristics, academic performance in ninth grade, educational expectations, self-efficacy in math, high school characteristics), IPSW substantively reduced the potential self-selection bias and revealed what the outcomes would have been for dual-credit students had they not received the treatment. We repeated this procedure to estimate a different set of propensity scores due to students’ varying probability of dual credit course-taking in math/science, excluding 620 students who have taken dual credit courses but not in math/science.

Following prior literature (Bahr et al., 2017; Fink et al., 2024; Hu & Ortagus, 2019; Wang, 2015; Zhang, 2022), we selected several control variables in HSLS:09 as they may influence community college students’ STEM success. These variables included students’ sociodemographic characteristics (that is, sex, race/ethnicity, socioeconomic status quintile, whether at least one parent works in STEM occupations), academic performance and interest measures (that is, high school grade point average [GPA], educational expectations, the highest level of math course, the number of AP/International Baccalaureate (IB) credits earned, self-efficacy in math), college attendance (that is, first-year GPA, number of developmental courses taken, enrollment intensity), and financial aid received in the first year (that is, the amount of total grants, the amount of total student loans). To handle missing values of predictor variables, we used multiple imputation with sampling weight to generate five imputed datasets in Stata. Accounting for the selection bias, we conducted both descriptive analysis and a series of logistic regression analyses to examine the influence of dual credit course-taking in general and dual credit course-taking in math/science on community college students’ STEM success. For each model specification, we incorporated IPSW, sampling weights, the primary sampling unit, and strata to ensure generalization to the national population (Ridgeway et al., 2015).

RESULTS

Table 1 presents the descriptive summary of the proportion of students starting at a community college who have either completed a degree in STEM/CTE or were still enrolled in STEM at a 4-year institution within 4 years of high school graduation, accounting for the self-section bias of dual credit course-taking. Panel A indicates that a larger proportion of students (32.86%) with dual credits (n = 760) were defined to be successful in a STEM/CTE field, while only 21.96% of non-dual credit students (n = 1790) have done so. The difference between the treated group and the control group was even larger between 140 students who took a dual credit course in the subject of math/science (42.23%) and 1790 students without any dual credits (27.03%).

TABLE 1. Descriptive summary and odds ratio of the effect of dual enrollment on STEM success.
Panel A: Descriptive summary
Dual Credit course-taking Dual Credit course-taking in math/science
Treated Control Difference Treated Control Difference
STEM success as of 2017 32.86% 21.96% 10.90% 42.23% 27.03% 15.20%
Number of observations 760 1790 140 1790
Panel B: Odds ratio of logistic regression
STEM success as of 2017 1.625*** 1.899**
(0.199) (0.433)
Number of observations 2550 1930
  • Note: Models estimated with robust standard errors. The weight for each observation included in the post-weighting estimation was a product term between the IPSW and the sampling weight, divided by the mean of such product terms.
  • Abbreviation: STEM, science, technology, engineering, and math.
  • ** p < 0.01, *** p < 0.001.
  • Source: US Department of Education, National Center for Education Statistics, High School Longitudinal Study of 2009. Base Year, First Follow-Up, High School Transcript Study, and Postsecondary Education Transcript Study, and Student Financial Aid Records Data Collection.

Controlling for pretreatment and posttreatment covariates, the weighted model specifications of the full sample indicated that taking dual credit courses was positively associated with the probability of STEM success (odds ratio = 1.625, p < 0.001). In other words, students who started at a community college with dual credit course-taking records were 1.625 times more likely to either complete a degree in STEM/CTE or remain enrolled in STEM at a 4-year institution field within 4 years of high school graduation, when compared with their counterparts without dual credit course-taking records. The model specification estimated the predicted probability that 24.41% of students with dual credit courses achieve STEM success by 2017, while 16.58% of students with no dual credit courses could do so. More specifically, dual credit course-taking in math/science was also statistically related to students’ probability of STEM success (odds ratio = 1.899, p = 0.006). Compared with non-dual credit community college starters, students who took dual credit courses in math/science were 1.899 times more likely to either complete a degree in STEM/CTE or persist in STEM at a 4-year institution field. The model specification estimated the predicted probability that 33.96% of students with dual credit courses achieve STEM success by 2017, while 21.32% of students with no dual credit courses could do so.

IMPLICATIONS FOR PRACTITIONERS

This study finds that dual credit programs can be an effective tool for increasing community college students’ STEM success. Community college students who took at least one dual credit course, especially dual credit courses in math/science were more likely than their peers who did not take any dual credit courses to achieve STEM success by obtaining a CTE or STEM degree or persisting in a 4-year STEM program after transferring. These findings build upon the work of Minaya (2021) who found that dual credit College Algebra increased STEM major choice among community college students. Additionally, this study builds upon and supports the limited research on the positive impact of dual credit math/science on a range of postsecondary outcomes (Giani et al., 2014; Hemelt et al., 2020; Hu & Chan, 2023; Minaya, 2021; Speroni, 2011). For community college leaders and practitioners seeking to increase student success in STEM, we provide the following practical implications based on our research findings.

Highlight the benefits of dual credit on STEM success

Community college leaders and practitioners can highlight the STEM-specific benefits of dual credit course-taking to high school students. High school students who chose to participate in dual credit course-taking were motivated by the benefits associated with participation. For example, students expressed that dual credit provided a challenging schedule, cost savings, independence, college transition, and employment training (Burns & Lewis, 2000; Huntley & Schuh, 2002; Kanny, 2015; Lile et al., 2018). Conversely, as was noted in a study of Texas high school students, non-participants cited a lack of information and motivation as reasons for not enrolling in dual credit (O'Connor & Justice, 2008). Students with STEM aspirations may be more likely to participate in dual credit courses if they understand the STEM-specific benefits. Therefore, practitioners should incorporate information about the relationship between community colleges, dual credit course-taking, and STEM success into their recruitment strategies.

For students who completed a dual credit math/science course, the benefit to community college STEM success is substantial and this finding is consistent with prior research on the importance of early success in college math and science coursework with STEM outcomes (Bahr et al., 2017; Fink et al., 2024; Park et al., 2021). As success in first-year math and science upon entry into college is positively associated with STEM outcomes (Maltese & Tai, 2011), community college leaders can work with high school counselors, community college advisors, and dual credit course-taking coordinators to incorporate introductory dual credit math/science courses into local high school curriculum for STEM-aspiring students and to ensure equal access to these courses.

While prior research applauded the academic preparedness of dually enrolled students, it also emphasized potential challenges when it comes to students’ social engagement and emotional maturity to be successful in college-level success (Ferguson et al., 2015; Witkowsky et al., 2020). Given the significance of cocurricular and extracurricular activities for STEM-aspiring students, especially historically underrepresented students (Malcom & Feder, 2016; Reyes, 2011; Starobin et al., 2016; Starr & Minchella, 2016), it is critical for high school counselors and college advisors to support students with not only academic planning but also social engagement resources for holistic development. For example, as many early college in high school (ECHS) programs offer wraparound student services to ensure student success with curricular focus (such as STEM, arts), these programs have been noted to be particularly beneficial to historically underrepresented students in both academic and nonacademic contexts (Taylor et al., 2022; Woodcock & Olson Beal, 2013). Though current research on the impact of ECHS on students’ STEM success is based on small-scale programs due to the nature of these programs (Gilson & Matthews, 2019; Gnagey & Lavertu, 2016), community college leaders and practitioners should continue to highlight this particular type of dual credit programs in supporting students’ STEM success.

Streamline high school collaborations into STEM access and success strategy

Successful dual credit programs require effective collaboration between high schools and colleges (Haag, 2015; Piontek et al., 2016; Pretlow & Patteson, 2015). Because high school students’ self-efficacy and interest in math and science are significantly associated with eventual STEM success at all postsecondary levels (Moakler & Kim, 2014; Wang, 2013; Zhang et al., 2021), high school teachers and counselors are better positioned to address students’ questions and concerns related to dual credit courses. Piontek et al. (2016) study of dual credit programs across six Kentucky school districts highlighted the steps that high school counselors take to increase access to dual credit course-taking. For example, high school counselors were often the main form of support for dual credit-related concerns and lobbied for grants to offset student fees and transportation costs. High school partners are better equipped to identify students who have expressed interest in STEM and to allay student concerns that might otherwise preclude students from participating in dual credit course-taking.

From the program design perspective, effective high school and community college partnerships have also aligned other college readiness initiatives with dual credit programs. For example, Illinois’ transitional math program, which aims to increase college readiness for high school seniors and reduce developmental education needs, has successfully prepared high school seniors to be college ready in math since 2019. The program was intentionally designed with different math pathways, including a STEM pathway with particular college-ready requirements in math. With existing partnerships with local community colleges, some high schools were able to align both transitional math courses with dual credit courses to allow high school students to graduate not only college ready but with college credits (Hu & Creed, 2023). Thus, leveraging relationships with high schools presents major opportunities to expand dual credit programs broadly and to increase community college students’ STEM success.

Reimagine the role of CTE programs in STEM success

Community colleges should continue to explore the untapped resources in dual credit CTE programs at both secondary and postsecondary levels. Similar to general dual credit programs, dual credit CTE programs include stand-alone courses and holistic ECHS programs which require participating high school graduates to earn an associate degree in CTE fields (Taylor et al., 2022). Regardless, high school CTE programs positively contribute to students’ college enrollment, major choice in applied STEM fields, and employment (Cowan, Naito et al., 2020; Fletcher & Tyson, 2017), and they are used by some states to increase STEM proficiency (Advance CTE, 2013). There is an opportunity to work with high schools to align their secondary CTE programs with the skillsets needed for community college students to achieve CTE/STEM success at the postsecondary level.

As Karp (2015) described dual enrollment as structural reform, it is essential for community colleges to lead the narrative of defining and redefining the role of CTE programs in STEM education. For example, Wozniak and Palmer (2013) noted the benefits to students by potentially increasing the availability of dual credit CTE programs. Miller and Riccardo (2021) emphasized that students may choose to participate in certain CTE programs over others due to program design differences with respect to the availability of internships, work-based experiences, and postsecondary credit earning. Considering the capacity and flexibility of CTE programs in community colleges (Grosz et al., 2022), these programs have also successfully connected students with various opportunities, such as online education (Garza Mitchell et al., 2016), upward transfer (Karandjeff & Schiorring, 2011; Malcom & Feder, 2016), dual-credit courses (Lowry & Thomas-Anderson, 2017), second-chance Pell Grants (Davis, 2019; Thouin, 2021), and so on. Community college leaders and practitioners should continue to destigmatize CTE programs and their outcomes (Gauthier, 2020; Jackson & Hasak, 2014), exploring innovative ways for CTE programs to promote educational success and equity in STEM fields.

ACKNOWLEDGMENTS

This research was supported by a grant from the American Educational Research Association which receives funds for its “AERA Grants Program” from the National Science Foundation under NSF award NSF-DRL #1749275. Opinions reflect those of the author and do not necessarily reflect those AERA or NSF.

    Biographies

    • Xiaodan Hu is associate professor in Education Policy and Leadership at Southern Methodist University, and she studies financial and policy initiatives on postsecondary access and completion, with a focus on educational equity in community colleges.

    • Jay Menees is a doctoral student in the Higher Education Administration program at the University of Florida, and his research focuses on dual enrollment policy and college admissions.

      The full text of this article hosted at iucr.org is unavailable due to technical difficulties.