Islamic Boarding School which serves as native Islamic education institution is a continuation of education tradition grown strongly in Islamization history in unitary nation Republic of Indonesia. The education of Islamic Boarding School is also a sub-system of National Education with the purpose to make intelligent national life, to make complete Indonesian people, namely the peoples believe in God The One, virtuous, possessing knowledge and skill, physically and mentally healthy, steady and independent personality, and social and national responsibility. From the result of study, it is found out that the change of education unit in Islamic Boarding School multi-cases study on Tebuireng Islamic Boarding School Jombang, Gading Islamic Boarding School Malang, and Sidogiri Islamic Boarding School Pasuruan, concerning education process in the attempt to achieve the objective of education in Islamic Boarding School, the writer may present: (a) Education institution carried out by Islamic Boarding School has formal and informal education unit, either classical in term of Islamic school education unit or general school education unit. Possessing curriculum from National Education Ministry of the one from Religion Ministry, from basic, middle or higher education level. But not all of them has sufficient infrastructure. (b) Agent of change in Islamic Boarding School is central public figure, either with the predicate of Ulama, Founder, Coach, Director, Head of Islamic Boarding School, or Headmaster possessing integrity, intellectual and high integrity to the development of Islamic Boarding School. (c) The purpose of education unit change happened so far is assumed in order the knowledge of the students is higher, therefore they must study in longer time. Therefore the education unit change from basic education level are various. Therefore many options for the student in seeking knowledge. This has implication that many peoples like Islamic Boarding School. Therefore it may maintain the survival. In another words, the change of education unit of Islamic Boarding School in preserving the existence may succeed.