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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!

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Althoff Catholic High School
1 day ago
Happy International Students Day! We love all the cultures and nations represented at Althoff
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Althoff Catholic High School
2 days ago
Bring your donations in before the holidays!
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  • Apply Today
    Both 2025-26 and 2026-27 applications are open! We accept transfer students throughout the school year. Apply Today!
  • 8th Grade Placement Test
    Our placement test for 8th graders helps us determine course placement in most of the core subjects; English, mathematic [ ... ]

    Our placement test for 8th graders helps us determine course placement in most of the core subjects; English, mathematics, and social studies. The test is required for all incoming first-year students and is offered throughout the year. 

    Sign up to reserve your spot!

    NEXT TESTING TIMES:
    Sunday, December 7, 1p.m.- incoming first-year students for 2026-27

    Wednesday, January 14, 3:30p.m.- this test will not be considered for scholarships

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  • Crusader for a Day Shadow Visit

    Come spend a day as a Crusader! Sign up today

  • Financial Aid

    Apply for 2025 now! Financial aid for the 2026-27 school year will open in January 2026.

  • 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.

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