Abstract
The study aimed to assess the subject group heads’ instructional supervision and its effect on the performance of their teachers in Cardona Senior High School during the Second Semester of school year 2021 - 2022. The study utilized the descriptive correlational. The study concluded that academic leaders offer a good instructional supervision. They are able to provide technical assistance to teachers especially during the observation but they could improve more in supervising before and after the observation and in giving instructional strategies and interventions (3) Teachers’ profile do not affect their assessment on the instructional supervision of subject group head. (4) The level of Results-Based Performance Management System of teachers are Very Satisfactory. (5) The extent of instructional supervision of subject group heads affects the level of performance of teachers. The performance of subject group heads need improvement, it was reflected too among their teachers and the overall performance of the school.
