Mater Dei High School
Forward in Vision, Rooted in Tradition

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

Dec 1 Mon
- Christmas Spirit Week
  Activities
- Special Grinch vs Santa Christmas Dress: Wear Green or Red
  Activities
Dec 2 Tue
- Christmas Spirit Week
  Activities
- Special Santa's Reindeer Christmas Dress: Friends Dress Alike
  Activities
Dec 3 Wed
- Christmas Spirit Week
  Activities
- Special Christmas Dress: Ugly Christmas Sweater w/ Spirit Bottoms
  Activities
- Special Performing Arts Dress: Musical Theatre Showcase
  Activities
Dec 4 Thu
- Christmas Spirit Week
  Activities
- Special Summer vs Winter Christmas Dress
  Activities
- Mock Trial @ Teach Democracy Round 5 5 PM – 8 PM (Central Justice Center, Santa Ana)
  Activities
Dec 5 Fri
- Christmas Spirit Week
  Activities
- Special Christmas Morning Dress: Wear Comfy Christmas PJs or Sweats
  Activities
- St. Nicholas Day
  Activities
Dec 11 Thu
- Special Performing Arts Dress - Madrigal Feast
  Activities
Dec 18 Thu
- Blessing in the Grotto 12 PM – 12:30 PM (Grotto)
  Activities
Dec 27 Sat
- Academic Decathlon Rome Trip (Italy)
  Activities
Dec 28 Sun
- Academic Decathlon Rome Trip (Italy)
  Activities
Dec 29 Mon
- Academic Decathlon Rome Trip (Italy)
  Activities
Dec 30 Tue
- Academic Decathlon Rome Trip (Italy)
  Activities
Dec 31 Wed
- Academic Decathlon Rome Trip (Italy)
  Activities

Events in December 2025
Su	Mo	Tu	We	Th	Fr	Sa
One event •	2 events ••	2 events ••	3 events •••	3 events •••	3 events •••
				One event •
				One event •
						One event •
One event •	One event •	One event •	One event •	One event •	One event •	One event •

Calendars

Diocesan Events
Home Campus
Counseling
Academics
Activities
Block Schedule
Athletics
Admissions
Alumni & Advancement
Visual Arts
Performing Arts
Campus Ministry
2024-2025 School Year

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