The research contributes to the school characteristics that influence academic performance of Junior High School students in Gomoa-West District. The descriptive research approach was employed. Data were gathered from 302 students and 65 teachers using questionnaires. The participants for the quantitative research were randomly selected from six schools within the district. The data were analysed using both descriptive and inferential statistics. The study revealed that lateness and absenteeism of students were the major characteristics that influenced the academic performance of the students. It was also evident that there is a positive relationship between study hours and student academic performance. It was recommended among others that teachers and parents should do their best to provide the appropriate environments for students to enhance and promote their academic performance