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Always a Crusader

Always a Crusader

WELCOME HOME!

YOU will always be a Crusader!  You are our legacy.  You make a difference.  You inspire us by who you are, what you do and what you care about. You are changing lives and changing the world.  You make us proud.  We are stronger because of YOU!

Althoff Catholic strives to serve you no matter what your stage of life.  We hope to continue our relationship with you for many years to come.  Our goal is to help you reconnect with classmates and network with other alums and families and engage our current students. So please keep us updated about where you are and all the new things in your life so we can stay connected.

WAYS TO STAY CONNECTED

  • Attend an Alumni Event
  • Like us on Facebook and Instagram
  • Support our faculty or help provide financial assistance by giving to the Annual Fund
  • Become a Volunteer
  • Serve on the Young Alumni Committee

We would love to hear from you, so please contact us at advancement@althoffcatholic.org!

  • Always a Crusader
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Althoff Catholic High School
1 day ago
🔥 HELP YOUR TEAM TAKE HOME THE 2026 ADDITIVE MANUFACTURING FAN FAVORITE TITLE 🔥 Althoff Catholic High School is ready to compete with focus, skill, and something to prove 🔥 🏆 Want to see them win Fan Favorite? 👉 Like, Comment, and Share this post The team with the most engagement takes home the title! 👀 #ProjectMFG #FanFavorite #additivemanufacturing
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Althoff Catholic High School
1 day ago
Help support #AlthofCatholic and #GiveSTLday2026 at https://www.althoffcatholic.org/giving/givestl2026.cfm! This year, your #GiveSTL2026 gift will support our Annual Fund, which is used to cover expenses that tuition does not, like updating instructional tools, providing competitive teacher salaries and coveringbuilding maintenance. Because of you, Althoff continues to thrive. Enrollment for 2025–2026 reached a seven-year high, and your support helps us enhance academics, expand programs, improve our campus, and keep Catholic education accessible. You help create an environment where excellence, character, and faith are lived daily. Yet challenges remain. Tuition covers only 65% of the true cost of education, and while parishes help, a gap persists. We rely on your generosity to make faith-based education possible for all families. Every gift to our Annual Fund strengthens the foundation on which our students learn, grow, and live lives of faith, knowledge, and service. Thank you for making our GiveSTL Day 2026 a success!
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  • Crusader Summer Camps

    Check out the Crusader Summer Camps available this summer! New camps added weekly. We hope you can join us!!!

  • Apply Today
    Both 2025-26 and 2026-27 applications are open! We accept transfer students throughout the school year. Apply Today!
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    Apply for 2026 now!

  • Get Involved
    See how you can become part of our volunteer community and get involved with different groups and projects!
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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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FACTS Website Services

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.

Summer Camps!