skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Search for: All records

Creators/Authors contains: "Brown, Lisa D."

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

  1. This study examined the impact of Supplemental Instruction (SI) on student performance in introductory STEM courses at a Historically Black College or University (HBCU). Using a non-experimental, ex post facto design, academic outcomes from 105 courses and 2,829 student grades were analyzed over five semesters. While overall course performance scores did not significantly differ between SI and non-SI groups, SI-supported courses showed significantly higher frequencies of “B” and “C” grades and a greater proportion of passing rates. These findings suggest that SI may improve academic outcomes for students at risk of failure. Institutions seeking to reduce attrition in gateway STEM courses—especially among underrepresented students—should consider SI as a scalable, equity-driven academic support model. 
    more » « less
    Free, publicly-accessible full text available May 15, 2026