Problem Roulette (PR), an online study service at the University of Michigan, offers points-free formative practice to students preparing for examinations in introductory science, technology, engineering, and mathematics courses. Using four years of PR data involving millions of problem attempts by thousands of students, we quantify the benefits…

The Uniformed Services University (USU) created the Enlisted to Medical Degree Preparatory Program (EMDP2) in 2014 with the goal of diversifying their student body. The primary purpose of this study was to determine whether certain independent variables (gender, age, race/ethnicity, underrepresented in medicine (URM) status, years of military…

This study examined the mediation and moderation of membership in a demographic group underrepresented in physics classes on course outcomes measured by course grades and Force and Motion Conceptual Evaluation (FMCE) post-test scores. The study used a large dataset (N ¼ 4490) of course grades, SAT and ACT mathematics scores (ACTM), and matched…

This dissertation investigates several topics in state merit-based financial aid research. The main research content includes three separate studies, primarily using the administrative datasets from the Missouri Department of Higher Education. The first study is an empirical paper that examines the effects of the Missouri Bright Flight Scholarship…

Two set of studies were conducted to better understand grades and grading practices in physics courses, and how these might influence demographic representational disparities in physics. The first study investigates the relationships between grades and the student-level factors of standardized test scores, (binary) gender, underrepresented…

This study investigated predictors for ACT Science scores, a test used by many universities to rank applicants. This study utilized quantitative research methods using the Montana Office of Public Instruction's GEMS (Growth and Enhancement of Montana Students) data set. All advanced statistical analysis was conducted using Stata software IC/15.…

ACT is a nonprofit organization whose mission is to help people achieve education and workplace success. To help fulfill that mission, ACT offers school-day testing programs that provide all students with state- or district-funded access to its college readiness and admissions assessment, removing barriers to testing and opening doors to…

The current study examined characteristics of natural mentoring relationships (NMRs; i.e. mentoring relationships that develop organically with adults in one's pre-existing social network) among underrepresented college students as contributors to NMR retention across the first year of college. The sample consisted of 209 underrepresented college…

We have studied the impact of incoming preparation and demographic variables on student performance on the final exam in the standard introductory calculus-based mechanics course at three different institutions. Multivariable regression analysis was used to examine the extent to which exam scores can be predicted by a variety of variables that are…

Concerning the underrepresentation of female students in computer science (CS) classes at the K-12 level and math-intensive STEM fields, this study investigated the relationship between female students earning less credits in CS courses during high school and their STEM major choices. Data were drawn from a nationally representative sample of U.S.…

Underrepresented college students are more likely than majority students to underperform and drop out of college. Perceptions of status relative to other students may play a key role in this process. The current study uses subjective social status (SSS) to predict underrepresented students' grade point average via their sense of academic…

While women now earn more bachelor's degrees than men in many parts of the world, large gender gaps persist in fields of study, and women remain underrepresented in the most prestigious institutions. This study updates and extends the literature on gender disparities in higher education by comparing the selectivity of the institutions where men…

In this study, we evaluated the differential effects on racial/ethnic, family income, and gender groups of using ACT® College Readiness Assessment Composite score and high school grade point average (HSGPA) for predicting long-term college success. Outcomes included annual progress towards a degree (based on cumulative credit-bearing hours…