Abidoye, Florence OmosholapeAbidoye, Adekunle OmotayoAfolabi Kayode Ojo2024-04-172024-04-172023biology; teachers, students’; performance; senior secondary chools;https://uilspace.unilorin.edu.ng/handle/123456789/11998This study examined the Biology teachers’ impact on the performance of students in secondary schools in Osun State, Nigeria. This study sample included forty-eight (48) Secondary Schools selected by random sampling technique. The researcher designed teachers’ questionnaire which were administered to one hundred forty-five (145) Biology teachers. Researcher-designed validated questionnaire was used to elicit information from the respondents on the impact of biology teachers to the performance of students. Three research questions and two research hypotheses were formulated. Frequency counts and t-test statistics were used to analysis the data collected. Finding of this study revealed that Biology teachers’ impact to teaching in Secondary Schools was significant based on gender but it was not significant based on years of teaching experience. Based on the research findings recommendations were made on how the Biology teachers will have positive impact on students’ performance in senior secondary schools among others.enArticle