Traditionally diagnosed in children, attention-deficit/hyperactivity disorder (ADHD) is now regarded as a life span condition. The academic difficulties experienced by children and adolescents with ADHD have been observed to continue into young adulthood. Treatment outcome studies demonstrate that behavioral and pharmacotherapeutic interventions can be beneficial in improving ADHD symptoms such as inattention, and so facilitate academic performance in young adults with ADHD. This review discusses how ADHD leads to academic underperformance, the warning signs of undiagnosed ADHD, and the potential impact interventions can have on adult academic impairment.