This study investigated the influence of teacher classroom management skills on academic performance of pupils in public and private primary schools in Ibadan North Local Government Area of Oyo State. The study identified some instructional supervision variables such as; how each of these variables influence academic performance of primary school pupils in the LGA. A descriptive survey research design was adopted for the study and the multi-stage sampling technique was used to select the sample for the study. A total of 200 respondents were purposively selected from both public and private primary schools in the area. The instrument used was questionnaire tagged “Influence of Teacher Classroom Management Skills on Pupil’s Academic Performance Questionnaire (ITCMSPAPQ)”. Six research questions and six hypotheses were formulated. A total of 200 questionnaires were administered and retrieved. The data collected was analysed using frequency table, percentages, and Pearson’s Product Moment Correlation Co-efficient. The finding of the study showed that there is positive but low relationship (r=0.573; p>0.05) between teacher classroom management skills and academic performance. Based on the findings, recommendation was made that all universities that offer in-service programs for primary school teachers should lay more emphasis on ‘Classroom Management’ as a module (course) to empower qualified teachers with better classroom management skills for improved pupil’s academic performance.