GreatSchools.org is a national nonprofit organization founded in 1998 that helps parents improve educational opportunities for their children. It provides high-quality, evidence-based information about schools across the United States, serving over 55 million unique visitors each year. The organization is dedicated to supporting parents, schools, and communities in reducing educational inequities.

GreatSchools offers trusted school ratings based on academic performance and school climate, along with detailed profiles for over 150,000 public, charter, and private schools. Parents and community members can leave anonymous reviews, providing valuable insights beyond test scores. The platform also features a library of educational resources to assist families in supporting their children's learning. Additionally, GreatSchools collaborates with researchers and public agencies to enhance access to school data and promote educational equity.