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
- RED: B. 1, 3, 5, 7
  Block Schedule
- Office Hour 2:30 PM – 3 PM
  Block Schedule
Dec 2 Tue
- GRAY: B. 2, 4, 6, 8
  Block Schedule
Dec 3 Wed
- RED (Late Start): B. 1, 3, 5, 7
  Block Schedule
Dec 4 Thu
- GRAY: B. 2, 4, 6, 8
  Block Schedule
- Office Hour 2:20 PM – 3 PM
  Block Schedule
Dec 5 Fri
- RED (Rally Schedule): B. 1, 3, 5, 7
  Block Schedule
Dec 8 Mon
- GRAY (Mass Schedule): B. 2, 4, 6, 8
  Block Schedule
- Office Hour 3 PM – 3:30 PM
  Block Schedule
Dec 9 Tue
- RED: B. 1, 3, 5, 7
  Block Schedule
Dec 10 Wed
- GRAY (Late Start): B. 2, 4, 6, 8
  Block Schedule
Dec 11 Thu
- RED: B. 1, 3, 5, 7
  Block Schedule
- Office Hour 2:20 PM – 3 PM
  Block Schedule
Dec 12 Fri
- GRAY: B. 2, 4, 6, 8
  Block Schedule
Dec 15 Mon
- Semester Exams
  Block Schedule
Dec 16 Tue
- Semester Exams
  Block Schedule
Dec 17 Wed
- Semester Exams
  Block Schedule
Dec 18 Thu
- Semester Exams
  Block Schedule
Dec 19 Fri
- No School - Faculty Work Day
  Block Schedule
Dec 22 Mon
- No School - Christmas Break
  Block Schedule
Dec 23 Tue
- No School - Christmas Break
  Block Schedule
Dec 24 Wed
- Christmas Eve
  Block Schedule
- No School - Christmas Break
  Block Schedule
Dec 25 Thu
- Christmas Day
  Block Schedule
- No School - Christmas Break
  Block Schedule
Dec 26 Fri
- No School - Christmas Break
  Block Schedule
Dec 29 Mon
- No School - Christmas Break
  Block Schedule
Dec 30 Tue
- No School - Christmas Break
  Block Schedule
Dec 31 Wed
- No School - Christmas Break
  Block Schedule

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