Mater Dei High School
September 2026
2026-2027
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
30
31
RED: B. 1, 3, 5, 7
2026-2027
V Girls Flag Football vs La Habra
(MD)
2026-2027
V Girls Golf @ Southbay Invitational
9 AM
(Lakewood CC)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
1
GRAY: B. 2, 4, 6, 8
2026-2027
Back to School Night: Freshmen & Sophomores
(MD)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
Leadership Team Meeting
10 AM
–
3 PM
(MCR)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
V Girls Golf @ JSerra
4 PM
(Arroyo Trabuco GC)
2026-2027
V Boys Water Polo @ Westlake
5:15 PM
(Westlake)
2026-2027
V Girls Volleyball @ Millikan
5:45 PM
(Millikan)
2026-2027
2
RED: B. 1, 3, 5, 7
2026-2027
International Student Connection during Both Lunches
(Library/LCC/Rotunda)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
V Girls Golf @ University HS
3:30 PM
(Mile Square GC)
2026-2027
3
GRAY: B. 2, 4, 6, 8
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
Diocesan DPA Meeting
8:30 AM
–
2 PM
(Pastoral Center - 4A)
2026-2027
PAC Project Committee Weekly Update
8:30 AM
–
9:30 AM
(Slater Construction Trailer)
2026-2027
V Girls Volleyball vs Mira Costa
5:45 PM
(MAC)
2026-2027
4
RED (Rally Schedule): B. 1, 3, 5, 7
2026-2027
Fall Rally
(MAC)
2026-2027
V Girls Volleyball @ Dave Mohs Tournament
(Edison)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
V Boys Water Polo vs Crean Lutheran
5 PM
(MD)
2026-2027
V Football vs Valor Christian, CO
7 PM
(SA Bowl)
2026-2027
5
V Cross Country @ Lowell Invitational
(Golden Gate Park)
2026-2027
V Girls Volleyball @ Dave Mohs Tournament
(Edison)
2026-2027
6
7
No School - Labor Day
2026-2027
8
GRAY (Pair Day - Early Dismissal): B. 2, 4, 6, 8
2026-2027
Back to School Night: Juniors & Seniors
(MD)
2026-2027
Club Rush during Both Lunches
(Shamrock Plaza)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
Executive Team Meeting
10 AM
–
12 PM
(MCR)
2026-2027
Lunch & Learn: Parent Education Series
12 PM
–
12:45 PM
(Virtual)
2026-2027
Office Hour
1:30 PM
–
3:30 PM
2026-2027
V Boys Water Polo vs Oaks Christian
4 PM
(MD)
2026-2027
V Girls Flag Football vs Orange Lutheran
6 PM
(MD)
2026-2027
9
RED: B. 1, 3, 5, 7
2026-2027
Club Rush during Both Lunches
(Shamrock Plaza)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
V Girls Tennis @ Northwood
3:15 PM
(Northwood HS)
2026-2027
10
GRAY: B. 2, 4, 6, 8
2026-2027
Service Fair during Both Lunches
(Shamrock Plaza)
2026-2027
Special Dress: Red/White/Blue Dress with Spirit Bottoms
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
PAC Project Committee Weekly Update
8:30 AM
–
9:30 AM
(Slater Construction Trailer)
2026-2027
Senior Parent Webinar: College Application Overview
12 PM
–
1 PM
(Online)
2026-2027
V Girls Tennis @ Crean Lutheran
3 PM
(Crean Lutheran)
2026-2027
V Girls Golf @ Crean Lutheran
3:30 PM
(Mile Square GC)
2026-2027
V Girls Volleyball vs Cathedral Catholic
5:45 PM
(MAC)
2026-2027
11
No School - Diocesan Convocation
2026-2027
Advanced Choirs Retreat
(Cedar Lake, Big Bear)
2026-2027
V Boys Water Polo @ Santa Barbara Tournament
(Dos Pueblos)
2026-2027
Diocesan Educators Convocation
8 AM
–
12 PM
(Santa Margarita Catholic HS)
2026-2027
V Football vs Corona Centennial
7 PM
(SA Bowl)
2026-2027
12
Advanced Choirs Retreat
(Cedar Lake, Big Bear)
2026-2027
SAT Testing
(TBD)
2026-2027
V Boys Water Polo @ Santa Barbara Tournament
(Dos Pueblos)
2026-2027
V Girls Flag Football vs Riverside Poly/Rosary
(MD)
2026-2027
Class of 2006 Reunion
5 PM
–
11 PM
(LeVecke & Shamrock Plaza)
2026-2027
13
Advanced Choirs Retreat
(Cedar Lake, Big Bear)
2026-2027
14
RED: B. 1, 3, 5, 7
2026-2027
V Girls Flag Football vs St. Joseph
(MD)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
CTC Meeting
3 PM
(LCC)
2026-2027
15
GRAY: B. 2, 4, 6, 8
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
Executive Team Meeting
10 AM
–
12 PM
(MCR)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
V Girls Volleyball @ Torrey Pines
5:30 PM
(Torrey Pines)
2026-2027
V Girls Flag Football vs JSerra
6 PM
(MD)
2026-2027
16
RED (Pair Day - Early Dismissal): B. 1, 3, 5, 7
2026-2027
Faculty/Staff Meeting
7:30 AM
(LeVecke)
2026-2027
Management Team Meeting
9:30 AM
–
10:30 AM
(MCR)
2026-2027
Office Hour
1:30 PM
–
3:30 PM
2026-2027
V Girls Golf @ Crean Lutheran
4 PM
(Rancho San Joaquin)
2026-2027
17
GRAY (Mass Schedule): B. 2, 4, 6, 8
2026-2027
All School Mass - Mass of the Holy Spirit
(MAC)
2026-2027
Monarch Professional Dress
2026-2027
Student Wellness Activity during Both Lunches
(Shamrock Plaza)
2026-2027
V Boys Water Polo @ South Coast Tournament
(TBD)
2026-2027
V Girls Flag Football vs Redlands East Valley
(MD)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
PAC Project Committee Weekly Update
8:30 AM
–
9:30 AM
(Slater Construction Trailer)
2026-2027
Diocesan Learning Support Meeting
2:45 PM
–
3:30 PM
(Zoom)
2026-2027
V Girls Golf @ JSerra
3:30 PM
(Mile Square GC)
2026-2027
V Girls Volleyball @ Bishop Gorman
6 PM
(Bishop Gorman)
2026-2027
18
RED: B. 1, 3, 5, 7
2026-2027
Current Freshman & New Student Tailgate
(SA Bowl)
2026-2027
MANE Mentor Meeting during Upper Lunch
(Library)
2026-2027
V Boys Water Polo @ South Coast Tournament
(TBD)
2026-2027
V Cross Country @ Woodbridge Invitational
(Great Park, Irvine)
2026-2027
V Girls Volleyball @ Durango Fall Classic
(Las Vegas, NV)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
V Football vs Bishop Gorman
7 PM
(SA Bowl)
2026-2027
19
Class of 1990 Reunion
(LeVecke)
2026-2027
V Boys Water Polo @ South Coast Tournament
(TBD)
2026-2027
V Cross Country @ Woodbridge Invitational
(Great Park, Irvine)
2026-2027
V Girls Flag Football @ Huntington Beach HS
(Huntington Beach HS)
2026-2027
V Girls Volleyball @ Durango Fall Classic
(Las Vegas, NV)
2026-2027
MD Unplugged
7 PM
(Grotto)
2026-2027
20
21
FLEX DAY (8 AM - 2:30 PM)
2026-2027
CSF Sign-Ups
(Online)
2026-2027
NHS Sign-Ups
(Online)
2026-2027
Tentative Freshman Retreat Conference (Option #2)
8 AM
–
2:10 PM
(MD)
2026-2027
22
GRAY: B. 2, 4, 6, 8
2026-2027
CSF Sign-Ups
(Online)
2026-2027
NHS Sign-Ups
(Online)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
Executive Team Meeting
1 PM
–
3 PM
(MCR)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
V Girls Golf @ Santa Margarita
3:30 PM
(Mile Square GC)
2026-2027
College Athletics Overview
6 PM
–
8 PM
(Library/LCC/Rotunda)
2026-2027
V Girls Flag Football @ Santa Margarita
6 PM
(Santa Margarita)
2026-2027
23
RED: B. 1, 3, 5, 7
2026-2027
CSF Sign-Ups
(Online)
2026-2027
NHS Sign-Ups
(Online)
2026-2027
Department Meetings
7:30 AM
2026-2027
Coffee Chat (Counseling)
9 AM
–
10 AM
(Library)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
V Boys Water Polo @ Santa Margarita
5 PM
(Santa Margarita)
2026-2027
24
GRAY: B. 2, 4, 6, 8
2026-2027
CSF Sign-Ups
(Online)
2026-2027
NHS Sign-Ups
(Online)
2026-2027
V Girls Flag Football @ Linfield Christian
(Linfield Christian)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
PAC Project Committee Weekly Update
8:30 AM
–
9:30 AM
(Slater Construction Trailer)
2026-2027
Diocesan Technology Coordinator Meeting
2:30 PM
–
3:30 PM
(Zoom)
2026-2027
V Girls Volleyball vs Orange Lutheran
5:45 PM
(MAC)
2026-2027
Play Production: These Shining Lives
7 PM
(Phillips Hall, Santa Ana College)
2026-2027
25
RED (Pair Day - Early Dismissal): B. 1, 3, 5, 7
2026-2027
CSF Sign-Ups
(Online)
2026-2027
Mid-Autumn Festival during Both Lunches
(Shamrock Plaza)
2026-2027
NHS Sign-Ups
(Online)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
Play Production: These Shining Lives
7 PM
(Phillips Hall, Santa Ana College)
2026-2027
26
V Girls Flag Football @ Huntington Beach HS
(Huntington Beach HS)
2026-2027
College Dance Day
9 AM
–
3 PM
(MAC)
2026-2027
Play Production: These Shining Lives
2 PM
(Phillips Hall, Santa Ana College)
2026-2027
Play Production: These Shining Lives
7 PM
(Phillips Hall, Santa Ana College)
2026-2027
27
Family Mass & Breakfast
9:30 AM
(MAC & LeVecke)
2026-2027
28
GRAY (Special Schedule): B. 2, 4, 6, 8
2026-2027
V Girls Flag Football vs Yorba Linda HS
(MD)
2026-2027
V Girls Golf @ Ayala Tournament
9 AM
(Western Hills CC)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
Spiritual Formation Committee Meeting
3 PM
–
4 PM
(Chapel Annex)
2026-2027
29
RED: B. 1, 3, 5, 7
2026-2027
Special Senior Dress: 2027 Senior T-Shirt with Spirit Bottoms
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
Executive Team Meeting
10 AM
–
12 PM
(MCR)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
V Girls Volleyball vs JSerra
5:45 PM
(MAC)
2026-2027
V Girls Flag Football @ Orange Lutheran
6 PM
(Orange Lutheran)
2026-2027
30
GRAY: B. 2, 4, 6, 8
2026-2027
V Girls Golf @ Orange Lutheran
2 PM
(Black Gold)
2026-2027
Office Hour
2:30 PM
–
3:30 PM
2026-2027
V Boys Water Polo @ JSerra
5 PM
(JSerra)
2026-2027
V Girls Volleyball @ Santa Margarita
5:45 PM
(Santa Margarita)
2026-2027
1
RED: B. 1, 3, 5, 7
2026-2027
V Girls Flag Football vs Beaumont
(MD)
2026-2027
V Girls Volleyball @ Nike Tournament of Champions
(Phoenix, AZ)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
PAC Project Committee Weekly Update
8:30 AM
–
9:30 AM
(Slater Construction Trailer)
2026-2027
2
GRAY: B. 2, 4, 6, 8
2026-2027
Concert Choir & Vivace Retreat
(Cedar Lake, Big Bear)
2026-2027
Grandparent's Day
(Library)
2026-2027
MD Spirit Dress
2026-2027
V Girls Volleyball @ Nike Tournament of Champions
(Phoenix, AZ)
2026-2027
Office Hour
7:45 AM
–
8:30 AM
2026-2027
V Boys Water Polo @ Sage Hill
5 PM
(Sage Hill)
2026-2027
V Football @ Santa Margarita
7 PM
(Santa Margarita)
2026-2027
3
Boo Bash
(LeVecke)
2026-2027
Concert Choir & Vivace Retreat
(Cedar Lake, Big Bear)
2026-2027
SAT Testing
(TBD)
2026-2027
V Cross Country @ Central Park Invitational
(HB Central Park)
2026-2027
V Girls Flag Football @ Bellflower Tournament
(Bellflower HS)
2026-2027
V Girls Volleyball @ Nike Tournament of Champions
(Phoenix, AZ)
2026-2027
V Boys Water Polo vs Santana
10 AM
(MD)
2026-2027