The purpose of the study was to investigate the influence of conflict in senior high schools in the Offinso Municipal. The objectives of the study were to identify the causes of conflict in Senior High Schools, find out the effects of conflicts on teachers performance and to determine the strategies put in place for resolving conflicts in Senior High Schools in the Offinso Municipality. The study employed a descriptive survey design using questionnaire to collect data. The target population for the study was 266 which consisted of 12 headmasters and assistant headmasters and 254 teachers. Purposive sampling was used to select all the 12 headmasters and assistant headmasters while simple random sampling was used to select 127 teachers totalling 139 respondents for the study. The data was analyzed using the Statistical Package for Social Sciences (SPSS). The study found among others that inter-personal, intra-personal and role conflict were types of conflict in organization. Also limited resources and goal difference were causes of conflict in senior high schools. Improvement in cooperation, quality of decisions and future communications are positive effects of conflict. Physical withdrawal of people and decrease in productivity were negative effects of conflict. It is recommended based on the findings that heads of educational institutions should avoid discrimination and favoritisms among staff in the course of their administrative roles to reduce conflicts among their staff.