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

Sep 2 Wed
- International Student Connection during Both Lunches (Library/LCC/Rotunda)
  Counseling
Sep 8 Tue
- Lunch & Learn: Parent Education Series 12 PM – 12:45 PM (Virtual)
  Counseling
Sep 10 Thu
- Senior Parent Webinar 12 PM – 1 PM (Online)
  Counseling
Sep 17 Thu
- Student Wellness Activity during Both Lunches (Shamrock Plaza)
  Counseling
Sep 18 Fri
- MANE Mentor Meeting during Upper Lunch (Library)
  Counseling
Sep 21 Mon
- CSF Sign-Ups (Online)
  Counseling
- NHS Sign-Ups (Online)
  Counseling
Sep 22 Tue
- CSF Sign-Ups (Online)
  Counseling
- NHS Sign-Ups (Online)
  Counseling
- College Athletics Overview 6 PM – 8 PM (Library/LCC/Rotunda)
  Counseling
Sep 23 Wed
- CSF Sign-Ups (Online)
  Counseling
- NHS Sign-Ups (Online)
  Counseling
- Coffee Chat (Counseling) 9 AM – 10 AM (Library)
  Counseling
Sep 24 Thu
- CSF Sign-Ups (Online)
  Counseling
- NHS Sign-Ups (Online)
  Counseling
Sep 25 Fri
- CSF Sign-Ups (Online)
  Counseling
- Mid-Autumn Festival during Both Lunches (Shamrock Plaza)
  Counseling
- NHS Sign-Ups (Online)
  Counseling
Sep 28 Mon
- Celebration of Academic Excellence 6 PM – 8 PM (LeVecke)
  Counseling

Events in September 2026
Su	Mo	Tu	We	Th	Fr	Sa
			One event •
		One event •		One event •
				One event •	One event •
	2 events ••	3 events •••	3 events •••	2 events ••	3 events •••
	One event •

Calendars

Diocesan Events
Home Campus
Counseling
Academics
Activities
Block Schedule
Athletics
Admissions
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Visual Arts
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