Tulare Union High School is a public school for secondary education in Tulare, California, United States. This high school is part of the Tulare Joint Union High School District, along with Tulare Western High School and Mission Oak High School, led by Superintendent Dr. Sarah Koligian. Enrollment at the four-year high school was 1,847 for the 2013–2014 school year. The Administration Building and the school's Tulare Community Auditorium are listed in the National Register of Historic Places.