Castro Valley High School is a comprehensive public high school for grades 9 to 12 and is located in the unincorporated suburban community of Castro Valley, California, U.S. Named a National Exemplary School in 1984–85 and 1988–89, it was a California Distinguished School in 1987–88 and 2000-01. It is part of the Castro Valley Unified School District. Castro Valley High School has been named a 2009 California Distinguished School.