Mater Dei High School
Forward in Vision, Rooted in Tradition

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

Alumni Heritage Fund

WE ARE MD

Many students have walked these halls, studied in these classrooms and played on these fields. All with the same goal in mind: to be the best Monarch they can be.

With your donation to the We Are MD Alumni Heritage Fund, you could help current and future monarchs achieve their dreams of learning, playing, performing and being a part of our great tradition of Honor, Glory and Love!

Every gift, of any amount, makes a difference and will help provide children and grandchildren of Mater Dei graduates access to the same exceptional education you and I received. Through the generosity of our alumni, nearly $50,000 was awarded through the Alumni Heritage Fund for the fall of 2025. Thank you to all who have donated so far towards our awards for Fall 2026!

2026 Alumni Heritage Fund Award Opportunities:

Fall 2026 Monarchs - Applications for the 2026-27 Alumni Heritage Fund Grants are now open. Click below to apply today.
Applications must be received by 4 p.m. on Friday, December 12 to be considered.
Class of 2026 - Check back in December for the 2026 Senior Award Application