Attention deficit hyperactivity disorder (ADHD) is a common childhood disorder in which problems with focusing disrupt a normal life. There are two subtypes of ADHD: combined type (ADHD-C), which includes symptoms of inattention and hyperactivity or impulsivity, and inattentive type (ADHD-I), in which symptoms are limited to inattention. The profile of ADHD-I, including attention deficits, comorbid disorders, social impairments, and neurocognitive functioning, is sufficiently different from the profile of ADHD-C that treatments effective for ADHD-C may not also be effective in treating ADHD-I. Most studies of ADHD treatment evaluate ADHD-C, and there is very little research into treatments aimed specifically at ADHD-I. The Child Life and Attention Skills (CLAS) Program is a behavioral program designed specifically for ADHD-I and combines life skills training for the child, teacher consultation, and parent training techniques adapted from ADHD-C treatments. This study will compare the effectiveness of the CLAS Program, standard parent training, and community referrals in treating children with ADHD-I.