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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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Althoff Catholic High School
1 day ago
We had the esteemed privilege of having 104-year-old, WWII veteran, Bob Schultz visit the school. Bob spoke to our Modern US History and Current Affairs classes and gave mass amounts of insight concerning his experiences as a Marine during the Pacific Theater. Bob also shared numerous keepsakes and books detailing his experiences. We also had the honor of bestowing Bob with a brand new way for us at Althoff to honor veterans and military members in our community: The Eleanor LeBeau-Cooke Coin. This coin will be given to Althoff military community members as a token of appreciation for their service and sacrifices, while expressing gratitude for them choosing the Althoff Catholic family to call home. Bob greatly deserved to be the first individual to receive this recognition, and he will always be a member of the Althoff Catholic community. Thank you again Bob & Shirley Schultz for your visit!
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Althoff Catholic High School
2 days ago
Our Crusader family grows. Welcome!!!
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Althoff Catholic High School
3 days ago
Tables are still available for the Althoff Catholic Parents & Friends Club Music Trivia this Saturday, April 18th, 2026 at Heritage Hall, Althoff Catholic High School! One of our most fun fundraisers of the year - come ready to dance, sing, eat, drink and support our students. Tickets on sale now at givebutter.com/PAFC-musictrivia2026 $200/table (up to 10 players). Doors open at 6:15 PM, trivia starts at 7 PM. Cash prizes, cash bar (no outside alcohol please), raffles and more. Please BYO trivia snacks! Bring your best music knowledge—and your dancing shoes—for a night of laughter, competition, and Crusader spirit!
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Althoff Catholic High School
6 days ago
As we prepare to celebrate our seniors and their incredible journey at Althoff, we want to make sure you have all the key dates and details handy. Here are some of the big highlights to put on your radar: ✨ The Big Night: Prom & After-Prom Friday, April 24th at St. Clair Country Club. Parents, you are welcome to join us for the crowning of the Prom King & Queen! The fun continues afterward at the Sportsplex. 🏅 Senior-Parent Mass & Awards Breakfast Sunday, May 3rd at 9:00 AM. This is a beautiful tradition where we recognize the hard work and achievements of our seniors. ⛪ Baccalaureate Mass & Practice Tuesday, May 5th at St. Peter’s Cathedral. This is a special moment where our seniors join the other Catholic high schools in our diocese for a final blessing. 🍔 The Final Send-off: Senior BBQ Friday, May 8th. Before they sit for their final two exams, the seniors will gather in the Quad for one last BBQ together. 🎓 Graduation Day Saturday, May 16th at 12:00 PM at St. Peter’s Cathedral. The moment we’ve all been waiting for! A few important reminders: April 30th: Final deadline to submit college/post-secondary plans to Mr. Campbell. May 1st: Senior Checkout and Graduation Gown distribution! May 6th-8th: Senior Exam Days (and Out of Uniform week!).
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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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