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

Mar 1 Thu
- AM Swim Practice 7 AM – 8:30 AM (MD Pool)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 2 Fri
- AM Dryland & Strength Training 6:15 AM – 7:30 AM (MD Weight Room)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 3 Sat
- Saturday Practice for Red & Gray Groups 10 AM – 12 PM (MD Pool)
Mar 5 Mon
- No School or Practice. Enjoy the day off!
Mar 6 Tue
- AM Swim Practice 7 AM – 8:30 AM (MD Pool)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 7 Wed
- AM Dryland & Strength Training 7:30 AM – 8:30 AM (MD Weight Room)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 8 Thu
- AM Swim Practice 6 AM – 7:30 AM (MD Pool)
- Swim Meet vs Edison 3:15 PM – 6:30 PM (MD Pool)
Mar 9 Fri
- AM Dryland & Strength Training 6:15 AM – 7:30 AM (MD Weight Room)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 10 Sat
- Saturday Practice for Red & Gray Groups 8 AM – 10 AM (MD Pool)
Mar 12 Mon
- AM Dryland & Strength Training 6:15 AM – 7:30 AM (MD Weight Room)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 13 Tue
- AM Swim Practice 7 AM – 8:30 AM (MD Pool)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 14 Wed
- AM Dryland & Strength Training 7:30 AM – 8:30 AM (MD Weight Room)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 15 Thu
- AM Swim Practice 6 AM – 7:30 AM (MD Pool)
- Boy's Only - Millikan Relay Prelims 9 AM – 10 AM (CAPISTRANO VALLEY HIGH Address: 26301 Via Escolar Mission Viejo, CA. 92692)
- Girls Only Practice 3 PM – 5 PM (MD Pool)
Mar 16 Fri
- AM Dryland & Strength Training 6:15 AM – 7:30 AM (MD Weight Room)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 17 Sat
- Regency Water Polo Tournament at MD
- Boys Only - Millikan Relay Finals at Capo Valley HS 5 PM – 9 PM (CAPISTRANO VALLEY HIGH SCHOOL Address: 26301 Via Escolar Mission Viejo, CA. 92692)
Mar 18 Sun
- Regency Water Polo Tournament at MD
Mar 19 Mon
- AM Dryland & Strength Training 6:15 AM – 7:30 AM (MD Weight Room)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 20 Tue
- No AM Practice today
- SWIM MEET: Millikan Relay Prelims (Var & F/S Girls Only) 12:45 PM – 6 PM (Capo Valley HS. Mission Viejo. School Release time is 12:45pm for athletes on travel roster.)
- Combined Red & Gray Practice (Before Team Dinner 3:30 PM – 5:30 PM (MD Pool)
- Swim Team Dinner & Social 6 PM – 8 PM (Le Vecke Center)
Mar 21 Wed
- AM Dryland & Strength Training 7:30 AM – 8:30 AM (MD Weight Room)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 22 Thu
- AM Swim Practice 6 AM – 7:30 AM (MD Pool)
- SWIM MEET: Santa Margarita vs. Mater Dei 3:15 PM – 6:30 PM (MD Pool)
Mar 23 Fri
- No School
- Swim Team Picture Day (Mandatory Event) 9 AM – 11 PM (MD Pool)
- Mater Dei Aquatics Swim-A-Thon (Mandatory Event) 11 AM – 2 PM (MD Pool)
Mar 26 Mon
- AM Dryland & Strength Training 6:15 AM – 7:30 AM (MD Weight Room)
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 27 Tue
- AM Swim Practice 7 AM – 8:30 AM (MD Pool)
- Upper Lunch Sports Mass 10:40 AM – 11:20 AM
- Girls Only Practice (Done Early for GWP Banquet) 3 PM – 4:30 PM
- Boys Only Practice 4:30 PM – 6 PM (MD Pool)
- Girls Water Polo Banquet 6 PM – 9 PM (Le Vecke Center)
Mar 28 Wed
- AM Dryland & Strength Training 7:30 AM – 8:30 AM (MD Weight Room)
- Lower Lunch Sports Mass 12:20 PM – 1 PM
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 29 Thu
- AM Swim Practice 6 AM – 7:30 AM (MD Pool)
- Swim Meet - Mater Dei at St. John Bosco/St. Joseph 1:15 PM – 7 PM (St. John Bosco. 1:15pm dismissal from class. Bus leaves at 1:30pm)
Mar 30 Fri
- AM Dryland & Strength Training 6:15 AM – 7:30 AM (MD Weight Room)
- Rally Day - Swimmers Meet to go into Rally together 10 AM – 11 AM
- Red Group Practice 3 PM – 4:45 PM
- Gray Group Practice 4:15 PM – 6 PM (MD Pool)
Mar 31 Sat
- UCSB Triathlon (High School Championships) Optional Event 7 AM – 10 AM (Santa Barbara)

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