Abstract: This study examined the relationship between peer influence, pupils interest in schooling and academic achievement. A total of 500 pupils were purposefully selected from 10 purposefully selected secondary schools in Ijebu-Ode, Ogun State, Nigeria. Two instrument namely: Interest in schooling scale with r = 0.79 developed by Mitchell and modified by Umoinyang to suit the Nigeria environment and a modified ten items peer effect rating questionnaire developed by Tella with r = 0.72 was used to gathered data on the study. Two research questions were developed to guide the study and data collected to answer the research questions were analysed using Pearson Product Moment correlation. The results indicate that both peer influence and pupils interest correlate significantly with academic achievement. Based on these findings recommendation on how pupils academic achievement can further be strengthened were highlighted to the Nigeria parents.