Background: Adolescents' school engagement, mental health, and substance use have been major concerns during the COVID-19 pandemic, particularly given disruptions to school instruction. We examined how the instructional setting was associated with academic and health-related outcomes within an adolescent cohort followed during the pandemic.…

The COVID-19 pandemic affected education, causing schools in the United States to switch from face-to-face to remote learning modalities. The purpose of this study was to examine the impact of educational modalities on academic achievement in K-12 education to contribute to evidence-based decision-making in science education by practitioners and…

This dissertation consists of three papers. Online Learning, Offline Outcomes: Online Course Taking and High School Student Performance. This paper uses fixed effects models to estimate differences in contemporaneous and downstream academic outcomes for students who take courses virtually and face-to-face, both for initial attempts and for…

Background: E-cigarette prevention education aims to mitigate adolescent e-cigarette use. Such education is increasingly delivered through virtual/video-based teaching platforms (e.g. Zoom, Google Classrooms). However, there is little evidence about the effectiveness of virtual e-cigarette education compared to in-person education on adolescents'…