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Admission Application for the 2026-27 School Year is now OPEN!

"Rooted in Jesus Christ and Catholic values, we aspire to achieve our personal

best in all we do."

 

WHERE PREPARATION MEETS POTENTIAL

 
Preparing Students for Success for Over 50 Years

At Althoff Catholic College Preparatory High School, we help every student discover their potential and maximize their abilities. Rooted in the traditions of our Catholic faith and guided by a modern approach to education, we prepare students for success in college, the military, and future careers.

Our results speak for themselves: each graduating class earns an average of $10 million in scholarships each year.

A Well-Rounded Education

We believe success comes from growth in every area of life—academic, athletic, artistic, and altruistic. That’s why we partner with students and families to help them grow into confident young adults who know who they are.

To prepare students for life after graduation, we offer:

  • Hands-on learning in engineering, biomedical science, forensics, and art
  • Dual credit and Advancement College Placement courses - 1818 Advanced College Credit through SLU as well as SWIC and AP courses starting in the junior year– earn real college credit while still in high school
Find Your Fit at Althoff Catholic

We welcome all students seeking a personalized, faith-based education that challenges and supports them. We’d love to connect with you and your family to talk about your goals and show you how Althoff Catholic can be the right fit for your future.

"Crusaders are modern day change agents who are not only learning,

but teaching the world how to live, work, play, and pray!

Academic Excellence

Real-world learning and hands-on experiences prepare our students for success in the future.

Holistic Approach

We believe in educating the whole person - academically, spiritually, and emotionally.

Family Environment

More than a school—we’re a family. Here, students are supported, inspired, and empowered to thrive.

Faith Formation

We are a faith-based community where belief in God is part of the everyday environment.

Follow Us On Instagram

  • 2025-26 application is still open! We accept transfer students throughout the school year. Application for 2026-27 will [ ... ]
    2025-26 application is still open! We accept transfer students throughout the school year. Application for 2026-27 will open in September. Apply Today!

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  • Our Golf Classic is now sold out, but you can still support the event by purchasing Golf Ball Drop and Barrel of Booze T [ ... ]

    Our Golf Classic is now sold out, but you can still support the event by purchasing Golf Ball Drop and Barrel of Booze Tickets as well as sponsorships! 

    Click on "TICKETS" to find details on sponsorship opportunities, golf ball drop tickets, and more!
    https://givebutter.com/c8uFre

    Wednesday, September 17th at St. Clair Country Club, 100 S 78th St, Belleville, IL 62223, USA

     

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

  • See how you can become part of our volunteer community & get involved with different groups & projects!

Upcoming Events

Crusader Golf