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

Once a Monarch - ALWAYS a Monarch!

The MD Office of Alumni Relations is committed to serving over 30,000 Mater Dei graduates. The goals of the Mater Dei Alumni Association are to raise funds for need-based financial aid through the Alumni Heritage Fund, to keep you informed about news and events at Mater Dei; to connect you with classmates, teammates and like-minded Monarchs; to provide business networking opportunities and to organize class reunions every 5 years.

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!