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Spring Semester Grades Available 6/12 @ 3 p.m. Featured Photo

Spring Semester Grades Available 6/12 @ 3 p.m.

Spring Semester grades will available in Aeries on Wednesday, June 12 at 3 p.m. Grades must be viewed through the Aeries website. Click for instructions to view spring 2024 semester grades.
2024 Ring of Honor Inductees Featured Photo

2024 Ring of Honor Inductees

Congratulations to Vicki Marsha Uniforms - Tim and Diane Cologne, Bishop Kevin Vann, and Jenni and Dave Taylor. Learn more about the Ring of Honor and past inductees by clicking here.
2024-2025 Calendar is now LIVE Featured Photo

2024-2025 Calendar is now LIVE

The 2024-2025 calendar is now LIVE! All dates listed on the school's calendar are subject to change and will be communicated to our community in advance.
2024-2025 School Year Registration Featured Photo

2024-2025 School Year Registration

We look forward to another amazing school year with all of our Monarchs! Information regarding registration was sent via email to all current and incoming families.
2024 Spirit of Josef Award Featured Photo

2024 Spirit of Josef Award

Thank you to all who nominated an MD Employee for the 2024 Spirit of Josef Award. Thank you to everyone who took time to submit nominations. We surprised this year’s winner with the news last week aired this special video on Monarch Television this morning!
Fall 2023 Semester Honor Roll Featured Photo

Fall 2023 Semester Honor Roll

Congratulations to all our Monarchs who made the Fall 2023 Honor Roll. Your hard work and dedication have paid off, showcasing your commitment to academic excellence. Keep up the great work and continue to inspire others with your achievements!
2024-2025 Important Dates Calendar Featured Photo

2024-2025 Important Dates Calendar

The important dates calendar is released annually to help our MD Community plan for vacations, national and school holidays, school breaks, start and end of school year, semester and AP exams, and special events. All dates listed on the important dates calendar are subject to change and will be communicated to our community in advance.
Introducing Our 2023-2025 Strategic Plan Featured Photo

Introducing Our 2023-2025 Strategic Plan

This exciting initiative is the culmination of extensive collaboration and careful planning, and we are confident that it will significantly enhance Mater Dei’s future.

Upcoming Events

ASB Camp

Location: Lake Arrowhead

ASB Camp

Location: Lake Arrowhead

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.
Faith & Service Academics Athletics Campus Life The Arts

Mater Dei At A Glance

  • Uniquely Mater Dei
    • 195 Zip Codes
    • 124 Feeder Schools
    • 72% Catholic/ 28% Non Catholic
  • Faith & Service
    • 45K+ Hours Given Per Year
    • 600+ Organizations
    • 160 Average Hours Per Graduate
  • Comprehensive Academics
    • 53 Honors Courses
    • 22 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
    • 48% of student body
    • 70% of Artists on Honor Roll
  • Global Alumni Network
    • 30K+ Worldwide
    • Robust Alumni Business Network
    • 20% Faculty Staff are Alumni