Boarding school is the educational institution where students not only learn, but also residing and living together at the institute. This research is a field reseach designed to determine analysis in the characteir formation of students in MTs-MA Boarding School Foundation Assunnah Cirebon, withused qualitative analysis of its multidisciplinary approach. informants in this study is from the foundation, business institution that is a determinant of educational policy, school committees, school principals, teachers, and some students are characterless. The results of this study can be concluded that Islamic Boarding School Assunnah Spreading propaganda Islamiyah through tashfiyah and tarbiyah with salafussholeh understanding, Education characters developed is the integration of character education in learning and dormitories, Attachment student-teacher, tilmidz- ustad/ustadzah, and students-committee has an important role in the formation of the character of students, the contribution of education Boarding School by planting six character education Indonesia and the hallmark of character education, in the form of understanding the salaf, compliance, independence, discipline, sincerity, simplicity, islamic brotherhood, submission and obedience
