In an attempt to reduce the educational achievement gap of Hispanic students in a professional degree program, two courses grounded in the Keller method were implemented at a pharmacy school. The Keller method is characterized by breaking course content into modules, then allowing students to test and repeatedly remediate and retest until competency is achieved. Outcomes from this intervention-based cohort study suggest that the Keller method is effective in reducing the educational achievement gap of Hispanic students in a professional degree program. (Contains 1 note and 2 tables.)