This quasi-experimental mixed method research attempts to investigate the effects of integrating peace education into the mathematics curriculum. A sample of 4 classes from 4 sample secondary schools in representative areas of Jamaica was selected. The treatment involved integrating peace education into a unit of mathematics lessons on statistics. The quantitative data were obtained through pre-test and post-test on mathematics. Qualitative data were obtained through interviews, student questionnaire surveys, classroom observation, and student and teachers’ reflections.