August 8, 2023 --- First Day of School

August 9, 2023 --- Decennial Anniversary Mass with reception to follow starting at 9:30am.

September 29-30, 2023 --- Alumni Week - Friday: Homecoming Tailgate & School Tour, 4:00pm-6:45pm, football game vs. St. Anthony 7-10pm. Tickets and information is on the school website at https://www.piusmatthias.org/alumniweekend. Saturday: Alumni Reunion Classes of 1975-1979 at the Skylinks Golf Course in Long Beach starting at 6:30pm. More information click here.

October 1, 2023 --- Alumni Mass and lunch to follow, 12:00pm. See first link above for information and to RSVP.

October 19-21; October 26-28, 2023 --- Shakespeare's Hamlet, St. Matthias Theater, Times Vary

November 20-24, 2023 --- Thanksgiving Break

November 25, 2023 --- Warrior Poker Classic Tournament

November 28, 2023 --- Giving Tuesday - Have your generous gift to the school's Legacy Fund doubled: https://piusmatthias.networkforgood.com/

December 1, 2023 --- Christmas Tree Lighting - 6-8pm

December 21, 2023 - January 7, 2024 --- Christmas Break

January 15, 2024 --- No school

January 27, 2024 --- Lunch with Mom's

January 28, 2024-February 3, 2024 --- Catholic Schools Week

February 3, 2024 --- Alumni Mixer at Brown Soul Brewery in South Gate, 3606 Tweedy Blvd., 4:00-7:00pm - $30 per person, 2 drinks and appetizers

March 14, 2024 --- Start of St. Matthias Theater production of "In The Heights"

March 22, 2024 --- Career Day

March 29-April 5, 2024 --- Easter Break

April 6, 2024 --- Alumni Sip & Paint

April 21, 2024 --- Freeway Series with Dad - 12pm - 10pm

April 27, 2024 --- Impact Gala & Grand Reunion - Cocktails, Silent Auction 5pm, dinner 6:30pm, dancing to follow.

May 4, 2024 --- 2nd Annual Warrior Family Picnic

May 10, 2024 --- Grad Night (Tentative)

May 18, 2024 --- Prom

May 24, 2024 --- Graduation

June 17, 2024 --- Warrior Cup Gold Tournament, Rio Hondo Golf Club, Downey, 11am check-in, BBQ lunch, 12:30pm start, and 5:30pm dinner and auction.