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

High School Mascot Tournament Hosted by The64.com

Our beloved mascots, Molly and Monty, are competing in a national High School Mascot Tournament hosted by The64.com!

Thanks to your amazing support, Monty and Molly are moving on — but the journey isn’t over yet.

We need your votes again to keep the momentum going and help them win the regional round!

How to Vote for Round 2 (by 4/29/25 at midnight):

CLICK HERE for the tournament link.
Create or log into your account.
Find Monty and Molly in the West Region, Division 3 and cast your vote by 4/29 at midnight!