ABSTRACT Supervision has become indispensable for it is an impetus enabling headmasters to maintaining order and sanity in schools particularly in senior high secondary schools. It has therefore become needful that in era where people would always want their way despite law and order, proper supervision has become appropriate to help sustain discipline. This makes it clear that, supervision cannot be underrated because it is a major constituent in any good leadership in every school for which reason head of schools need not to overlook. It is for this purpose that the study sought to find out the supervisory practices of heads in senior high schools in Ashanti region with specific emphasis on Kumasi Secondary Technical School with specific objectives to investigate the supervisory practices of Head of KSTS, identify strategies that the head uses in supervision in KSTS and explore challenges heads face in performing the supervisory functions in KSTS. The study used a case study design. This design was applied to help establish the facts regarding the supervisory practices. Purposive sampling technique was used to sample while simple random sampling technique was used to sample teachers. Closed ended questions were used in the study. The, questionnaires were prepared in English Language and administered to all the respondents. The closed type items of the questionnaires were designed in Likert-scale form. Data was analysed using percentages. The supervisory practices were quite narrow and as such many key areas that demanded the supervisory input from the head may not be covered. This will invariably affect effectiveness in supervision. Since school supervision is very broad various supervisory practices are needed to check and manage realities in the school.