Fullerton Joint Union High School District (FJUHSD), founded in 1893 is a school district in Los Angeles County and Orange County, California.

The district serves a fifty-square-mile area which includes within Orange County the cities of Fullerton, La Habra, and small sections of Anaheim, Buena Park, Brea, and La Palma.

[2] There are approximately 16,299[citation needed] students in the union high school district and it is headed[when?]

As such, it is a high school for 16–18-year-old students in the district who, in most cases, have not made satisfactory progress toward graduation at one of the six comprehensive high schools in the district.

Students are usually referred to La Vista High School by one of the traditional high schools because they are short on credits in required courses to graduate.