Program Information The Garden Grove Unified School District is the third largest among 28 public school districts in Orange County, California. With more than 47,000 K-12 students, it ranks 11th in size of more than 1,000 school districts in California, and is the 96th largest school district of 17,800 in the U.S. The district employs more than 5,000 staff members and operates 70 schools: 47 elementary, 10 intermediate, 7 high schools, 2 continuation schools, 2 adult education centers, and 2 special education schools.