This study was conducted with the main objectives: to find out the causes of the High, Average, and Low academic achievements of the institutions in the BISE results of 2009 at secondary
level, to identify the factors which affect the academic achievements of the students at secondary level, and to give recommendations for the improvements of the situation. Mean, Standard
Deviation, Analysis of Variance and Scheffe post hoc tests were used as statistical tools. Although no significant differences were found in the managerial skills of the heads with High,
Average and Low academic achievements but the managerial skills of the heads were found relative to their institutions results. The main cause of High, Average and Low academic achievements of the institutions was their teachers’ effectiveness, physical facilities and internal evaluation system. It is recommended: refresher courses should be arranged to improve the managerial skills of the heads of the institutions teaching competencies of the teachers, competent teachers should be appointed, promotion of the teachers should be attached with their performance, good physical facilities i.e. proper infrastructure and building, computer and science laboratory for practical work, library, clean drinking water etc. should be provided, and internal
evaluation system should be improved by making it more effective, regular, and compulsory through proper class test, homework, and pre-board examination.