BackgroundThe purpose of this case study was to explore the effects of a school-based occupational therapy on children’s attention, school adaptation, sensory processing, and motor function for children in special classes in elementary school in Korea.Case presentationThe subjects of this study were a 7-year-old boy with autism spectrum disorder and a 9-year-old girl with intellectual disability. The school-based occupational therapy program consisted of 10 sessions and was conducted once a week for an hour and a half. The program consisted of classroom activities, use of school facilities, emotional management, and activities based on sensory integration, and was conducted as individual and group programs according to sessions. As a result of the study, all improved when the pre- and post-scores of the two children’s attention assessment, school adjustment scale, sensory processing evaluation tool for the children in school and BOT-2-SF were compared.ConclusionsAlthough the results from two cases cannot be generalized, the findings suggest the school-based occupational therapy program may help a positive effect on the school life of children with disabilities. Further investigation is necessary.