The study was set to assess the effect of learners’ discipline on retention in secondary schools in the Rwampara District. The study population included class teachers and headteachers from both private and government-aided secondary schools. A total of 41 respondents participated in the study. Simple random sampling and purposive sampling techniques were used. Both interview and questionnaire survey data collection methods were used. The relationship between learners’ discipline and their retention in schools was analysed at the bivariate level, where a t-test was used to compare the means of the dependent variable (learners’ retention) and independent variable (learners’ discipline) provided in SPSS Version 20. The researcher found out that the results were statistically significant as the p-value was less than 0.05 at p= 0.000. It was concluded that there is a statistically significant relationship between learners’ discipline and retention in secondary schools in Rwampara District. It was recommended that the school administrators should always provide guidance and counselling sessions to enable learners to feel motivated while in school, this will increase learners’ retention.