There are many factors within the schools that contribute to students’ behavioural problems in mathematics. The main ones are school discipline climate, teachers, parents and students participations in teachinglearning process. This study was set to find if there exists any relationship between school discipline climates and students behavioural problems in mathematics classes. The study was conducted in Lagos State Nigeria; two Local Government Educational Areas (LGEA} were randomly selected from the state. Forty junior secondary schools were sampled from the LGEA – twenty public and twenty private. Eighty mathematics teachers were used as subjects of the study (two mathematics teachers per school). Two hypotheses were postulated for the study; and questionnaire on schools disciplinary climate was the only instrument for the study. Analysis was done by using One Way ANOVA and Pearson Product Moment Correlation statistics. Result reveals that there is direct correlation between schools disciplinary styles and students misbehaviours in mathematics classes. Recommendations were given for future improvement in schools discipline with respect to teaching and learning of mathematics.

Keywords : Behavioural Problems; Discipline Climate; Students’ Misbehaviours; Students’ Participations