This study investigates rates and predictors of school-based services (SBSs) for 390 youth meeting criteria for Attention Deficit Hyperactivity Disorder and served in the San Diego public sectors. Only 60% of youth had received an Attention Deficit Hyperactivity Disorder diagnosis; these youth were younger, male, Caucasian (versus Latino), and active to public mental health and special education (Emotional Disturbance category) at enumeration of study participants. Higher rates of SBSs (64%) were revealed than in community samples. Only 26% accessed multimodal treatment including SBSs, medication, and mental health. In multivariate modeling, SBSs displayed a curvilinear relationship with age, which may explain previously conflicting results regarding that relationship. Youth with private insurance or receiving mental health or medication were more likely to receive SBSs. Gender, race/ethnicity, and caregiver education, health, and mental health were not related to SBSs use. These findings may reflect sample characteristics. Further exploration of factors influencing SBSs use in different populations is warranted. (Contains 1 figure and 5 tables.)