Attention Deficit Hyperactivity Disorder (ADHD) can have a major impact on students’ functioning at school—academically and socially. This study examined parental perceptions of schools in relation to their understanding of ADHD, information provided and general support. Parents of consecutive children with ADHD seen at the Centre for Community Child Health, Royal Children’s Hospital, Melbourne completed a questionnaire that assessed their beliefs about ADHD and schools. Questionnaire data were obtained from 66 parents (43 mothers, 23 fathers) of patients aged from 6 to 19 years (M = 10.4). The results indicated that parents of children with ADHD perceive that teachers have inadequate understanding, and schools insufficient resources, to support their children’s special needs. Schools need more resources, and teachers need more training, to promote positive experiences and outcomes for children with ADHD.