During the 2024 calendar year, I transitioned my calculus classes from a traditional points-based grading system to a mastery grading system. In this talk, I describe my implementation of mastery grading in these classes, including how mastery of learning objectives was measured, the process for reattempting learning objectives, and the determination of final grades. I will also examine how students’ final grades under the new system compare to data from several previous years of teaching the same classes at the same institution with a points-based system.