Undergraduate first-semester
general chemistry (GC1) functions
as a gatekeeper to STEM degrees, asymmetrically impacting students
who are nonwhite, from lower socioeconomic groups, non-native English
speakers, two-year college transfers, and first-generation in college.
Nationally, just under 30% of students earn grades of D, F, or withdraw
(termed DFW) in GC1; however, DFW rates are much higher for subgroups
underrepresented in STEM occupations. Socioeconomic inequalities tend
to increase over an individual’s lifetime due to the magnification
of cumulative disadvantage. Because undergraduate degrees correlate
with higher employment and STEM occupations correlate with higher
earnings, GC1 represents a critical path point where disparities can
be interrupted. The most common strategy employed for GC1 is deficit
remediation for students determined to be at risk of DFW. Unfortunately,
extensive evidence demonstrates that the use of remediation strategies
for GC1 does not sustain benefits for students. In this work, an asset-based
approach, less prevalent in higher education than preuniversity, was
employed to stress test theories about interrupting disparities in
STEM education. This causal-comparative study involving 1,807 observations
reports on a 1-credit asset-based supplemental course in which DFW-potential
students at a minority-serving institution coenrolled during six semesters.
The study outlines this intervention, its impact on GC1 outcomes,
and its potential residual impact on progression to the next course
in the general chemistry sequence (GC2). Descriptive and hierarchical
inferential analysis of the data revealed socially important patterns.
The asset-based intervention successfully attracted students with
greater cumulative disadvantage. The intervention closed asymmetries
between students identified as DFW-potential and ABC-potential in
GC1 when a nontraditional curriculum was used but not when a traditional
curriculum was used. Mixed results and contingent effects were found
for the intervention’s impact on subsequent course outcomes.
Taking at least 11 credits in the semester of taking GC1 provided
an inoculate for participants in the asset-based intervention, increasing
the likelihood of passing GC2.