Foothill High School is a public secondary school located in the unincorporated community of Tustin Foothills in Orange County, California, United States. It has a mailing address of Santa Ana, but it is a part of the Tustin Unified School District. It is the only school in the Tustin Unified School District to offer the International Baccalaureate program. It is recipient of multiple California Distinguished School and National Blue Ribbon School awards.History and cultureOpened in September 1963 on 37acre of land, it is the second oldest high school in the Tustin Unified School District. Its name is derived from its literal position at the base of Cowan Heights and Lemon Heights in North Tustin. The school's colors are black and gold, and its mascot is the Knight.FHS offers 16 Advanced Placement courses, five International Baccalaureate Higher Level, and eight International Baccalaureate Standard Level courses.