This study focused on the school's strategy in fostering students" discipline in boarding schools. These strategies are: (1) fostering discipline and education in state defense, (2) religious formation, and (3) evaluation of its fostering activities. This study uses a qualitative approach with a type of case studydata collection techniques were collected through observation, interviews and documentation. Data analysis was done by reducing data, presenting data and drawing conclusions. The results of this study indicate that: (1) the strategy for improving discipline of students' is to adopt a military system, which involves personnel of the Indonesian military and police (TNI and POLRI) as trainers for fostering the student"s, habitual to give greetings and respect when meeting older people, habituation in eating manners, inherent supervision and formation and activation of the student organization, (2) a strategy in religious formation that adopts a quasi-Islamic boarding school coaching, for example, is obliged to pray five times in congregation, following Islamic religious obligatory activities, such as Qur"an reading, lecturing, praying in Friday, visit study, Friday sermon and celebrate forty days and working with third parties in conducting religious guidance and (3) evaluating the development of a reward and punishment system that gives an impact to each student.