Autism was one subtype of pervasive developmental disorders. Autism was no longer a low-incidence disability. Dealing with problem behaviors for students with autism was the most challenging and stressful issues. Positive behavior support emphasized to understand the function of student problem behaviors and the intervention strategies for student problem behaviors. This study would help school teachers and parents to implement positive behavior support for student problem behaviors and intervention strategies in terms of functional behavior assessment and behavior modification. Positive behavior support also emphasized primary, second, and tertiary prevention which would help parents and school teachers.