Why Althoff Catholic - Althoff Catholic

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

WHERE PREPARATION MEETS POTENTIAL

"Rooted in Jesus Christ and Catholic values, we aspire to achieve our personal
best in all we do."

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!"

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

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

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

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

Fall Open House

Don't miss our Fall Open House on Sunday, October 25. This event is designed for 7-8 graders as well as transfer student [ ... ]

Don't miss our Fall Open House on Sunday, October 25. This event is designed for 7-8 graders as well as transfer students to tour our facilities, meet with our teacher and students, and get your questions answered! Make sure to RSVP online . We look forward to seeing you there!
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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!
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 6, 1p.m.- incoming first-year students for 2027-28

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Crusader for a Day Shadow Visit

Dates for the 2027-28 school year are available now for the first half of the fall semester. Come spend a day as a [ ... ]

Dates for the 2027-28 school year are available now for the first half of the fall semester.
Come spend a day as a Crusader! Sign up today

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Financial Aid

Apply for 2026 now!
Get Involved

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