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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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  • Denim & Diamonds Gala and Auction 2026
  • What's Happening at Althoff
  • Annual Report

Althoff Catholic High School
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Althoff Catholic High School
1 day ago
The ACHS "Denim & Diamonds" Silent Auction is open for preview and bidding! If you are not attending, you an still sign up and bid until Saturday, 3/7 at 8:00 p.m. Visit https://althoff2026.ggo.bid and BID EARLY AND BID OFTEN...it's all for our Crusaders!
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Althoff Catholic High School
1 day ago
Get your Large Cash Raffle tickets now before drawing on Saturday! GRAND PRIZE: $10,000 Second Prize: $1,000 Third Prize: $500 ­ Tickets: $100/each Drawing: Saturday, March 7, 2026 You are not required to be present to win. https://althoffcatholic.ejoinme.org/largecashraffle2026
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Althoff Catholic High School
1 day ago
The school is closed starting tomorrow. We will be back on March 10th at 7:30 a.m. Enjoy the long weekend off from school!
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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.

7th Grade Placem