Program Information Santa Ana Unified School District is the 7th largest District in California, and the largest in Orange County. We service approximately 56,000 students. Our mission is to work collaboratively and comprehensively with staff, parents and the community to strengthen a learning environment focused on raising the achievement of all students and preparing them for success in college and career. We assure well-rounded learning experiences, which prepare our students for success in college and career. We engage, inspire, and challenge all of our students to become more productive citizens, ethical leaders, and positive contributors to our community, country and a global society.