State Medicaid agencies, by law, must contract with external quality review organizations (EQROs) to monitor the quality of care provided to beneficiaries enrolled in managed care plans. But in a study released in June of this year, the investigators found that only a few states use EQROs to assess and improve children's preventive and developmental services delivered by Medicaid plans. To help them expand the role of EQROs in improving well-child care, states need guidance and practical tools. In the project's second phase, the investigative team will develop these resources, including model requests for proposals, detailed specifications for contracts with EQROs, and companion materials that explain how these tools can be used. An advisory committee will review the materials and provide guidance for their dissemination.