Siswadi, A. , Sudrajat, J. , Afandi, R.D.S., Dahlan, R. and Khori, A. 2025. Implementation of Internal Quality Assurance System Policy and its Impact on School Performance: A Case Study at SDIT Aya Sophia Islamic School. International Journal of Social and Management Studies. 6, 3 (Jun. 2025), 60–66. DOI:https://doi.org/10.5555/ijosmas.v6i3.483.