About MD
Mater Dei is a distinguished destination of excellence in academics and technology, the arts, faith and service, campus life, and athletics. We are proud to be Orange County’s oldest and largest Catholic high school.
Admissions
Your journey to becoming a Monarch starts here! Tour campus, schedule a shadow day, begin your application, and more. We are excited for you to join the MD family!
Programs
Built on Catholic fellowship and intellectual rigor, our programs in academics, technology, athletics, faith and service, and the arts provide unlimited opportunities for student success. Comprehensive counseling and wellness resources educate and bolster families throughout the high school journey.
Faith in Action
Guided by the articulation of Catholic Social Teachings, Mater Dei prioritizes the faith development of our students with an emphasis on Christian service. We believe this allows our students to grow in their spiritual lives while living our gospel values through giving back to others and truly experiencing the face of God.
Campus Life
Through avenues of leadership, faith, shared interests, and extracurricular activities and events, students can make Mater Dei their own. Get involved today!
Community
Tradition never graduates. Alumni, lifetime parents, grandparents, and friends are a vital and vibrant aspect of our community. Once a Monarch, always a Monarch.
Giving

Events

May 4 Fri
- Guitar Dress Rehearsal 10 AM – 2 PM (Monarch Pavilion)
May 5 Sat
- Cinco de Mayo 90's Guitar Concert 1 PM – 3 PM (Monarch Pavilion)
May 15 Tue
- Music Academy All-Star Recital 5:30 PM – 7 PM (MDHS Chapel)
May 18 Fri
- Instrumental Music & Color Guard Banquet 6 PM – 8:30 PM (LeVecke)
May 22 Tue
- Music Academy Concert 7 PM – 8:30 PM (St. Jeanne de Lestonnac School )
May 23 Wed
- Jazz Band Rehearsal 2:30 PM – 5 PM
- Jazz Band @ Senior Awards 5 PM – 6:30 PM (MD Le Vecke)
May 25 Fri
- Instrumental Music Info Night 6 PM – 7:30 PM (Band Room)
May 26 Sat
- Graduation: Winds/Strings/Percussion 7:30 AM – 11:30 AM (UCI Bren Center)
May 30 Wed
- Jazz Band and Strings Performance 6:30 PM – 8:30 PM (St. Joachim School Costa Mesa, CA)