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

News & Announcements

November Monarchs of the Month

November Monarchs of the Month

Fire Wings x Mater Dei Athletics

November 7, 2025

October Monarchs of the Month

October Monarchs of the Month

Welcome Father Aaron Galvizo

Welcome Father Aaron Galvizo

September Monarchs of the Month

September Monarchs of the Month

Nicole Wise Named Softball Head Coach

Nicole Wise Named Softball Head Coach

Erik Zimmerman Named Boys Water Polo Head Coach

Erik Zimmerman Named Boys Water Polo Head Coach

August 13, 2025

2025-2026 Back to School Information

Back to School Information and the Parent-Student Handbook for the 2025-2026 school year is now available. Action is required. Check ParentSquare for full message!

Adrian Games Named Boys and Girls Tennis Head Coach

Adrian Games Named Boys and Girls Tennis Head Coach

Dr. Kenneth Miller Named Executive Director of Athletics

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