The study examined the relationship between maintenance of discipline and teachers’ productivity in Secondary Schools in Kwara State. The descriptive survey research design was used for the study. The population of this study consisted all 243 principals and 5,460 teachers in public secondary schools in Kwara State, Nigeria. The sample for the study consisted of 600 teachers and 30 principals from 30 public secondary schools in Kwara State. The sample was selected using Multi-stage sampling procedure. Two self-designed research instruments tagged “Maintenance of Discipline Questionnaire (MDQ)” and “Teacher Productivity Questionnaire (TPQ)” were used to collect relevant data for the study. The instruments were validated by experts in Educational Management. The reliability of the instruments (MDQ and TPQ) was determined through the test re-test method and a co-efficient of 0.79 and 0.85 were obtained for MDQ and TPQ respectively. The data obtained were analyzed using inferential statistics. The hypothesis was tested at 0.05 level of significance. The study revealed that there was significant relationship between maintenance of discipline and teachers’ productivity. Based on the findings of the study, it was concluded that maintenance of discipline is essential to teachers’ productivity in public secondary schools in Kwara State, Nigeria. Based on the findings of the study, it was recommended that the management of public secondary schools should make maintenance of discipline an integral part of the school in order to enhance teachers’ productivity.