Islam is very influential in the formation and development of Banten society. During the colonial period, aspects of life related to Islam were integrated. Natives who experienced educational discrimination and the downturn of Muslims themselves who were unable to rise from the colonialists at that time, became a strong reason for a Banten cleric named KH. Syam'un was born during the Dutch colonial period to establish an Islamic-based school. On this basis, the authors are interested in researching how the context of Islam in Banten is, how is the life history of the founder of Al-Khairiyah Citangkil, how is the modernization of Islamic boarding school education at Al-Khairiyah Cilegon Cilegon Banten carried out by KH. Sham'un. The purpose ...