Mater Dei High School

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

MDHS Class Reunions & Activities

WELCOME HOME MONARCHS!

Reunion planning is underway for the Classes ending in 3 and 8. Want to get involved? Click here to join your Class Reunion Planning Committee.

Reunions are planned by volunteers from each class, we need your help. The Office of Alumni Relations is available to assist in reunion planning in a number of ways including providing class contact information, reunion ideas, venues and guidance. If you are interested in being a reunion planner for your class, or if have questions about any alumni program, please contact MDHS Director of Alumni & Legacy Relations, Kathleen Kelly '94 at (714) 850-9536.

Visit the class pages on the right for details of upcoming events and photos of passed events. Go Monarchs!

Click here to join Mater Dei Connect now!
Mater Dei Connect gives access to the entire network of Monarch Alumni! Post updates, photos and view upcoming events. Find a mentor, be a mentor, visit the job board where you can post available positions as well as look for opportunities. Live out of the area, this is a great way to connect with Monarchs all over the country and the world. I look forward to connecting!

Stay connected and follow us on Instagram: @materdeimonarchs