The study examines the factors that contribute to deficient grade rates and potential solutions to mitigate the issue at Trinity University. Using 9070 students’ grades in STEM-related gateway courses between the fall 2015 and spring 2020 academic semesters, the findings indicate that first-generation, underrepresented, and PELL eligible students struggle the most. Taking multiple gateway classes in the same semester increases student deficient grade rates as opposed to taking one. The creation of a Quantitative Reasoning Skills Center holds promise in helping students academically succeed and decreasing deficient grade rates in gateway courses, including those who are most vulnerable.