The purpose of this study was to investigate the roles of teachers in the formulation and implementation of school-based innovations in Secondary Schools. This paper examines the various roles of teachers in the formulation of school based education innovations. The paper also investigates the various innovation implementation strategies employed by schools. The variouschallenges that school management go through in trying to formulate and implement innovations in their schools have also been highlighted. The study was conducted in Nandi North District. Simple random sampling technique was used to select 20 schools out of 50.From this, a total of 140 teachers participated in the study. Primary data was collected by use of questionnaires while document analysis formed the main source of secondary data. The collected data was analyzed by use of descriptive statistics and presented in form of frequency tables.The study found that teachers’ roles in the formulation of school based education innovations are not recognized It was also found that school innovation implementation strategies were inappropriate in the management of schools.The study also found out that there were various constraints to formulation and Implementation of school based education innovations. It was recommended that teachers be regarded as partners in education management. The study recommended that schools need to come up with prudent measures in regard to innovation formulation and implementation. The study also recommended the need for management of secondary schools and the Ministry of Education to conduct regular self-appraisals on their weaknesses and strengths with a view of minimizing on the constraints and challenges realized during the formulation and implementation process of school innovations.