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

All-School Auction

Join Mater Dei High School for an unforgettable evening as we celebrate 75 years of HONOR, GLORY, and LOVE at the Diamond Anniversary & Ring of Honor Gala on Saturday, April 25, 2026. This elegant formal gala will feature fine dining, entertainment, and a special Ring of Honor induction honoring individuals whose lasting contributions have shaped the Mater Dei legacy.

In addition to the live event, an exciting online auction will take place the week leading up to the Gala, offering exclusive items and experiences. Proceeds from the Gala and auction support vital school-wide programs and innovative technology enhancements that benefit ALL Mater Dei students.

We look forward to welcoming you to this milestone event as we celebrate our past, honor our legacy, and invest in the future of Mater Dei. Contact Melinda Craft, Coordinator of Special Events, at [email protected] or (714) 850-9534 with any questions.

THANK YOU TO OUR GENEROUS 2025 AUCTION SPONSORS!

Marquee Sponsor

Stephen G. and Regina Oswald Foundation

Presenting Sponsors

Checkpoint Communications

Farmers & Merchants Bank

Boyd Family Charitable Foundation

Dana and Patrick Strader

Lou and Nancy Stremick

Platinum Sponsors

Veronica and William Coffie

tBP/Architecture, Inc.

Friend of Mater Dei

Slater Builders Inc.

Gold Sponsors

Tom Duffy Services

El Monte Wholesale Meat, Inc.

Debi and Tom Pavlik

Hamdi and Friends

Silver Sponsors

Paul Allen Trustee Services CLPF, TTEE

Bocan and Mancini Families

Merchants Building Maintenance

Mara and Keith Murray

Orange County Heart Institute

RWC Building Products

Tom and Ann Speltz

Entertainment Sponsor

Advancement Partners

Decor Sponsors

Trina Schmidt Weddings