Reny Nurul’aini Suryana and Delis Sri Maryati 2025. Can In-House Training organized by the Principal improve the personal competence of Islamic Education teachers?. International Journal Of Humanities Education and Social Sciences (IJHESS) . 5, 3 (Dec. 2025). DOI:https://doi.org/10.55227/ijhess.v5i3.1914.