This study explores the reasons for why aboriginal parents decide for their children to cross district to school with a specific focus on three school district of Paiwaness tribes in Pingtung County. The area we research is undeveloped and the researcher is himself Paiwanese. It aims to explore why aboriginal parents choose to leave the school in tribes, discover the problems that parents and children encounter , how they handle the problems and the adaptations for children. The study adopts semi-structured questionnaire to conduct in-depth interviews. Purposive sampling was used to identify interviews and there were ten aboriginal parents were interviewed. The conclusions of the research are as the following:. 1.The main reasons for crossing district schooling include lack of peer-learning competitive in tribes, adaption in mainstream society and parents¡¦ positive discipline. 2.Poor marketing strategy of tribal school administrator, and local indigenous teachers¡¦ background and their negative image within daily lives affected parents¡¦ trust toward tribal school. 3.The decision of cross district schooling for children is influenced by parents¡¦ learning experience and opinions of family numbers. 4.The main consideration of cross district schooling for parents is to get household register of school district easily without comparing the ideas between the two different kinds of schools. 5.The problems they faced include driving the children to school, cultural learning of Paiwanese and learning tribal lives. But the main solution is passive pattern for parents. 6.The results of cross district school choice are satisfied mostly with parents¡¦ expectation but there is still a gap.