The purpose of this study was to explore the effects of mastery learning strategy on pupil’s mathematics achievement in Asante Akim North District. In the study, I used a quasi-experimental pretest post-test, non-equivalent control group design. The respondents in the study were JHS pupils. The target population was 160 pupils from 2 JHSs. However, 24 and 30 pupils were purposively sampled and randomly assigned into experimental and control groups respectively

Keywords : Mastery Learning Strategy, Pupil’s Mathematics Achievement, Enrichment, Remediation.