Mater Dei High School
Build The Future

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

Events

Aug 11 Tue
- V Girls Flag Football @ Edison 3:45 PM (Edison)
  Athletics
- V Girls Volleyball @ Harvard-Westlake 5:30 PM (Harvard-Westlake)
  Athletics
Aug 13 Thu
- V Boys Water Polo @ Yucaipa 4 PM (Yucaipa)
  Athletics
- V Girls Volleyball vs San Clemente 5:45 PM (MAC)
  Athletics
Aug 17 Mon
- V Girls Flag Football vs Carson (MD)
  Athletics
Aug 18 Tue
- V Girls Volleyball vs Los Alamitos 5:45 PM (MAC)
  Athletics
Aug 20 Thu
- V Girls Tennis @ Fountain Valley 3 PM (Fountain Valley HS)
  Athletics
- V Boys Water Polo vs Los Alamitos 5 PM (MD)
  Athletics
Aug 21 Fri
- V Football vs American Fork, UT 7 PM (SA Bowl)
  Athletics
Aug 22 Sat
- V Cross Country @ Mountie XPress Invitational (Mt. Sac)
  Athletics
Aug 25 Tue
- V Girls Tennis vs Edison 2:30 PM (Cabrillo TC)
  Athletics
- V Girls Volleyball vs Centennial 5:45 PM (MAC)
  Athletics
Aug 26 Wed
- V Girls Golf @ University HS 4 PM (Strawberry Farms GC)
  Athletics
- V Girls Flag Football vs Esperanza 6:15 PM (MD)
  Athletics
Aug 27 Thu
- V Girls Golf @ Edison 3:30 PM (Mile Square GC)
  Athletics
- V Boys Water Polo vs Palos Verdes 4 PM (MD)
  Athletics
- V Girls Volleyball @ Redondo Union 6:30 PM (Redondo Union)
  Athletics
Aug 29 Sat
- V Boys Water Polo @ Bishops 11 AM (Bishops)
  Athletics
- V Football @ Orem, UT 7 PM (West HS, UT)
  Athletics
Aug 31 Mon
- V Girls Golf @ Southbay Invitational 9 AM (Lakewood CC)
  Athletics
- V Girls Flag Football vs La Habra 6:30 PM (MD)
  Athletics

Events in August 2026
Su	Mo	Tu	We	Th	Fr	Sa
One event •	One event •	One event •	One event •	One event •	One event •

		2 events ••		2 events ••
	One event •	One event •		2 events ••	One event •	One event •
		2 events ••	2 events ••	3 events •••		2 events ••
	2 events ••	3 events •••	One event •	One event •	3 events •••	2 events ••

Calendars

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