An online database offers tools to help policy makers, advocates, researchers, and the media to chart nationwide change in juvenile justice policy, practices, and statistics. The Juvenile Justice GPS (Geography, Policy, Practice & Statistics) site monitors juvenile justice system change by examining state laws and juvenile justice practice, combined with the most relevant state and national statistics. The site is designed to share information and encourage reform. It is a project of the National Center for Juvenile Justice and supported by MacArthur’s Models for Change juvenile justice reform initiative.