RICHARD FRIMPONG OPPONG; WEIHUAN ZHOU; STEPHEN MARTIN. THE INFLUENCE OF CURRICULUM UNDERSTANDING, WORK MOTIVATION AND PRINCIPAL LEADERSHIP ON THE PERFORMANCE OF STATE JUNIOR HIGH SCHOOL TEACHERS IN LANGKAT REGENCY. Journal of Educational Management, Learning Center and Social Knowledge, [S. l.], v. 1, n. 2, p. 60–67, 2024. Disponível em: https://jedle.org/index.php/ojs/article/view/8. Acesso em: 1 jun. 2026.