Adaptive behavior is a person's ability to be able to adjust to norms or standards that apply in their environment. As not everyone is able to behave adaptively, because adaptive behavior is influenced by the environment, intelligence, emotional and social support. As experienced by children with intellectual disabilities, they have intelligence significantly below average, resulting in them having problems adjusting to the environment. The purpose of this study is to make a description, picture systematically, factually and accurately about the facts that occur about ceremonial rules in schools. The research method used in this study is qualitative descriptive method. Collecting data such as; observation, interviews, and documentation studies. Based on the results of observations in the field, data were obtained that some students have not mastered or understood the duties of ceremonial rules as a whole, which have been mastered by students including; stand neatly during the ceremony, do not chat during the ceremony and listen wisely when the master of ceremonies is giving the ceremonial supervisor's mandate. The use of role playing methods as an effort by teachers to improve adaptive behavior skills for children with mild intellectual impairment, more broadly children with intellectual disabilities can understand the rules that exist at home and in the surrounding environment. Teachers should always innovate in choosing learning methods that suit the learning needs and conditions of children with intellectual disabilities, schools as educational institutions should provide support so that teachers become more professional.