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
Behind every achievement, success, and championship, stand the alumni, parents, faculty, staff, and friends who fortify our future. We invite you to support MD in a variety of ways with a gift that is meaningful to you.
- Students
- Parents
- Faculty

Welcome

Welcome Home Monarchs!

Thank you for staying connected to your Alma Mater. We look forward to planning your 25 Year Reunion in 2028!

But you don't have to wait that long to get together. It's always fun to get together with classmates between reunion years as well. If you are interested in spearheading a small get together, please be in touch! I am happy to help make that happen. Go Monarchs!

Please e-mail Kathleen Kelly '94 or call (714) 850-9536 to update your contact information or start planning a casual class get together.

Want to connect with fellow Monarchs - visit www.materdeiconnect.org now!

2023 20 Year Reunion Photobooth Photos - Password: MD2003

Join the Class on Social Media for interaction, fun photos and more details
Class of 2003 on Facebook
Class of 2003 on Instagram