Granada Hills Charter (often abbreviated to GHCHS/GHC or simply Granada) is an independent charter school consisting of over 4,600 students in grades K–12, located in the Granada Hills neighborhood of Los Angeles, California, United States. It is the largest charter school in the nation. Granada also has a high Academic Performance Index (API) score of 878, greatly exceeding the target API score of 800 for all schools in California. On April 12, 2011, Granada was named a 2011 California Distinguished School. On December 22, 2011, Granada became an International Baccalaureate World School. Since 2011, the school has won seven National Academic Decathlon Championships.