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2025 Ring of Honor Inductees Featured Photo

2025 Ring of Honor Inductees

Congrats to Lifetime Monarch Parents Debi and Tom Pavlik and long-time Catholic educators Ellen and Steve Viau. Learn more about this recognition of these deserving members of the Monarch family.
Class of 2025 - It's Time to Graduate Featured Photo

Class of 2025 - It's Time to Graduate

See the Class of 2025 cross the graduation stage on Saturday, May 31 at 9:30 a.m. The livestream begins at 9 a.m. Click for ALL important graduation information and reminders.
Kaitlyn Ambriz Holl '21 Featured on ABC7 Featured Photo

Kaitlyn Ambriz Holl '21 Featured on ABC7

This proud MD alumna just graduated from Chapman University on Saturday, May 24 and honored her father, the late Orange councilman Steve Ambriz, at the ceremony. Click to enjoy the story.
Last Chance to Grab Your 24-25 Crown Yearbook! Featured Photo

Last Chance to Grab Your 24-25 Crown Yearbook!

Yearbook distribution begins 5/28 (for seniors) and 5/29 (grades 9-11). We have VERY LIMITED copies left of this year's edition. Click to secure your copy today before they are gone for good!
2025-2026 Sports Physicals Featured Photo

2025-2026 Sports Physicals

All Mater Dei student-athletes must have a current physical on file each year with Healthy Roster to participate in summer camps and sports. Our Sports Medicine Program has again partnered with Exer Urgent Care to offer convenient physicals at 55+ locations across Southern California, available May 1–August 31, 2025. Click for more information and to purchase yours today!
Habemus Papam: "Peace Be With You All" Featured Photo

Habemus Papam: "Peace Be With You All"

We echo the inaugural message of His Holiness, Pope Leo XIV, wihtin our own Mater Dei community: to embrace and share the peace that comes from Christ.
In Memory of Pope Francis Featured Photo

In Memory of Pope Francis

With Easter in our hearts, we also carry a profound sorrow. As the world celebrates the joy of the Resurrection, the Mater Dei community joins the global Church in mourning the passing of our beloved Holy Father, Pope Francis.
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Upcoming Events

ACT Testing

Time: 7 AM
Location: 600 Wing Classrooms
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We Are MD

Our Mission

Mater Dei is a co-educational Catholic college preparatory high school located in Santa Ana, CA. Rooted in our tradition of Honor, Glory, and Love, we serve a diverse student community committed to knowledge, faith, and service.
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Faith & Service Academics Athletics Campus Life The Arts

Mater Dei At A Glance

  • Uniquely Mater Dei
    • 188 Zip Codes
    • 124 Feeder Schools
    • 73% Catholic/ 27% Non Catholic
  • Faith & Service
    • 45K+ Hours Given Per Year
    • 600+ Organizations
    • 140 Average Hours Per Graduate
  • Comprehensive Academics
    • 55 Honors Courses
    • 21 AP Courses
    • 109+ Electives
  • Nationally Recognized Athletics
    • 28 Sports Teams
    • 71% Athletes on Honor Roll
    • 23 Gatorade Players of the Year
  • Unparalleled Arts
    • 82 Courses
    • 47% of student body
    • 70% of Artists on Honor Roll
  • Global Alumni Network
    • 30K+ Worldwide
    • Robust Alumni Business Network
    • 20% Faculty Staff are Alumni