Although tremendous strides have recently been made in the development of assessment and treatment methods for pediatric obsessive-compulsive disorder (OCD), more accurate methods for diagnosis, more effective treatments, and more refined instruments for monitoring progress during therapy are still needed. The present commentary highlights the papers in this series of articles. The excellent work by the contributors to this special edition highlights critical elements and limitations of the assessment process for OCD, the importance of monitoring symptom changes, and possible augmentation strategies for treatment refractory cases. The findings from these studies will almost certainly impact the management of pediatric OCD and lead to further refinements.