Aim 1: The proposed study will evaluate the efficacy, [maintenance, and cross-school year generalization] of a parent-teen-teacher collaborative intervention (Supporting Teens' Academic Needs Daily; STAND) vs. treatment as usual to increase the academic functioning of middle school students with ADHD. Intervention effects on ADHD symptomatology and impairment, grade-point-average (GPA), [organization, daily planner use], homework completion, teacher ratings of academic functioning and classroom behavior, and the parent-teen relationship will be examined.