The process of supervision is complex and it permeates the whole structure of the school system. Effective school supervision provides relevant and continuous support and encouragement to teachers’ instructional practices. Effective supervision of instruction is essential because it will enable teachers to be dynamic, knowledgeable and up-to-date in the teaching profession. Based on the aforementioned claims, proper and effective strict supervision in our contemporary secondary schools will foster dynamism and regular exchanges among intellectuals. This paper investigates the purpose of school supervision, challenges associated with educational supervision and prospects for educational supervision in secondary schools. The supervision of instruction is by design a developmental process with the main purpose of improving the instructional programs and to improve teaching and learning. The supervisory responsibility and monitoring teachers’ instructional work will promote tremendous influence on school activities and help ensure the benefits of a strong program of instruction for students. It was concluded that efforts must be geared toward overcoming most of the challenges facing instructional supervision and transformative agenda to improve the quality of learning in secondary schools.