Dikalni, D., Louise, Y., Manuramadanti, N. and Sari, U.P. 2024. Improving The Effectiveness of School Management: Training of School Principals In The Preparation of Lesson Plans, Improvement of Facilities and Infrastructure, and Handling Delays In Submitting Student Assignments. Educativo: Jurnal Pendidikan. 3, 1 (May 2024), Page 10–16. DOI:https://doi.org/10.56248/educativo.v3i1.247.