Abstract
This study aims to determine the effect of the principal’s leadership style on teacher performance. This research uses quantitative methods with causal study. The population of this study were 206 people, namely teachers of SMP Negeri Kecamatan Talang Kelapa. The sample of this research was 136 people. Data collection techniques using questionnaires and documentation. The data analysis technique used regresi linier simple. The results show that the principal’s academic supervision affects the performance of the Muhammadiyah vocational school teachers in Palembang City.