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 8 Wed
- Choir Information Night 6 PM (LeVecke)
  Performing Arts
Sep 10 Fri
- Advanced Choirs Retreat (Cedar Lake, Big Bear)
  Performing Arts
Sep 11 Sat
- Advanced Choirs Retreat (Cedar Lake, Big Bear)
  Performing Arts
Sep 12 Sun
- Advanced Choirs Retreat (Cedar Lake, Big Bear)
  Performing Arts
Sep 13 Mon
- All School Play Callbacks 3 PM – 5 PM (Little Theater)
  Performing Arts
Sep 14 Tue
- All School Play Callbacks 3 PM – 5 PM (Little Theater)
  Performing Arts
Sep 18 Sat
- Thespians Southern Leadership Conference (Upland High School)
  Performing Arts
- MD Unplugged 6 PM (Grotto)
  Performing Arts
Sep 19 Sun
- Festival of Children 2 PM (South Coast Plaza)
  Performing Arts
Sep 23 Thu
- Theatre in the Grotto: Shakespeare’s The Tempest 4 PM (Grotto)
  Performing Arts
Sep 25 Sat
- Theatre in the Grotto: Shakespeare’s The Tempest 4 PM (Grotto)
  Performing Arts
Sep 26 Sun
- Theatre in the Grotto: Shakespeare’s The Tempest 4 PM (Grotto)
  Performing Arts

Calendars

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