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

Mater Dei Grandparents Days

It is always so much much fun to have our grandparents on campus. Thank you to all who attended our three special days during the 2023-24 school year. We look forward to more fun next school year. Please check back in late summer for the dates and registration information for the 2024-25 School Year.

Click here to enjoy photos of past events. If you would like an original of any of these photos sent to you via email, i am happy to do so.
Thank you for your interest in MD Grandparents Day. Please contact Kathleen Kelly '94 - [email protected] if you have any questions.

Approximate Timeline of your visit to Mater Dei:
- Arrival/hospitality - 8:40 a.m. - 9:15 a.m.
- Off to class with your grandchild(ren) - 9:20 a.m. - 10:45 a.m.
- Mass with Grandparents & Grandchildren in Mater Dei Chapel – 10:50 - 11:30
- Lunch with Your Grandchild(ren) – Following Mass

Please note, space is limited, and we would like as many Monarch grandparents as possible to have this wonderful experience with their grandchildren. We respectfully request you only register for one of the three events.

While on campus for Grandparent's Day, Grandparents will enjoy a visit to one class with their grandchild, Mass with their grandchildren in the MD Chapel, and a special luncheon with your grandchild.