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THE FUTURE IS YOU!

Our mission at Althoff High School is that we are called by Jesus Christ to educate young people, in the Catholic tradition, to lead successful, faith-filled lives. Our vision for generations to come, is that Althoff High School will be a vibrant, Christ-centered community for young men and women. We will be the school of choice for families who know that academic rigor and faith formation in a small, family-like environment, right here in our own community, is what is best for their child. To accomplish this vision and mission, we rely on the support of our community partners, families, and foundations.

Explore the many ways that you can support the students and staff at Althoff Catholic High School to stay spiritually and fiscally strong.

The Cost To Educate A Student

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    • Annual Giving
    • Corporate Match
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  • Give Now
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  • Althoff Partners
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  • Events
  • Denim & Diamonds Gala and Auction 2026
  • What's Happening at Althoff
  • Annual Report

Althoff Catholic High School
1 day ago
Have you signed up for the Parents and Friends Music Trivia yet? Tables are still available - grab friends and come dance and sing your way to the $400 prize! https://givebutter.com/PAFC-musictrivia2026
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Althoff Catholic High School
2 days ago
Make your dinner plans now for tomorrow! Visit the Belleville Crossing Panera between 4-8 p.m. an easy and delicious way to support Althoff!
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Althoff Catholic High School
2 days ago
You are invited!!!! Reserve Your Seats by February 1st & Win up to $200! The Althoff Catholic High School 2026 "Denim & Diamonds" Gala and Dinner Auction PLUS After Party "Dueling Pianos" by Felix and Fingers https://althoffcatholic.ejoinme.org/gala2026 Saturday, March 7, 2026 at the Regency O'Fallon 6:00 PM: Reception, Cocktails, and Silent and Super Silent Auctions 7:00 PM: Multi-Course Themed Dinner, State of the School Presentation, Live Auction, and Fund a Need Presentation. Post Gala "Dueling Pianos" Entertainment by Felix and Fingers Denim and Diamonds Attire Early Bird Drawing! R.S.V.P for the Denim and Diamonds Gala and Auction by February 1st for a chance to win up to $200 cash! It's our way of saying thank you for reserving early! Drawing Eligibility: Paid reservations must be made online or received in the office by 11:59 p.m. on February 1, 2026. Every ticket purchased is an entry to win $25 (maximum $200 per table reserved). Drawing will be held on February 5, 2025. Help support our Gala!!! To purchase your tickets: https://althoffcatholic.ejoinme.org/tickets2026 To purchase a Large Cash Raffle ticket: https://althoffcatholic.ejoinme.org/largecashraffle2026 To become a sponsor or advertiser: https://althoffcatholic.ejoinme.org/sponsorship2026 To donate an auction item: https://althoffcatholic.ejoinme.org/donateitem2026 To purchase a bottle of wine or bourbon for our Wine/Bourbon Pull: https://www.signupgenius.com/go/10C0548A9A729A2F9C70-61460504-achs#/
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Althoff Catholic High School
4 days ago
Our teachers and staff finished the week with an in-service that included touring and exploring the Cathedral of Saint Peter and the National Shrine of Our Lady of the Snows!
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5401 W Main St.
Belleville, IL 62226
Main Office: 618.235.1100
Fax: 618.235.9535
info@althoffcatholic.org

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Althoff Catholic High School admits students of any race, color, national, or ethnic origin to all the rights, privileges, programs, and activities generally accorded or made available to students at the school. It does not discriminate on the basis of race, color, national, or ethnic origin in administration of its educational policies, admissions policies, scholarship and loan programs, and athletic and other school-administered programs.

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