This dissertation investigates the impact of attending a STEM-designated elementary school on students' math, ELA (English Language Arts), and science achievement and growth scores. As technology continues to advance in education, educators are exploring innovative instructional methods. With a concerning decline in math proficiency nationwide, there is growing recognition among policymakers and community leaders of the importance of preparing students for STEM-related careers from an early age. While extensive research exists on STEM in high school and higher-education contexts, there is a notable gap in the elementary-education setting. The findings reveal evidence that students attending STEM-designated schools achieve significantly higher scores in math, ELA, and science compared to their peers in non-STEM schools. Moreover, these students demonstrated greater growth in math scores over the course of the study period. These results underscore the potential benefits of STEM-focused educational environments for elementary students, suggesting that such schools may effectively foster academic success in key subjects. This study contributes insights for educators and school leaders seeking to integrate STEM principles into elementary education. By highlighting the positive outcomes associated with STEM-designated schools, this research informs educational practices and policy decisions aimed at enhancing student learning outcomes. Educators can use these findings to inform instructional strategies that promote active learning and engage students in STEM disciplines from an early age. Ultimately, this dissertation provides evidence-based information that empowers educators to make informed decisions about curriculum development and instructional practices, thereby advancing the quality of elementary education and preparing students for future academic and career success in STEM fields. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]