Skip Navigation
Main Office:618-235-1100
Quick Links
  • Spirit Store
  • Staff Directory
  • Uniforms
  • Employment
Make Donation
Make Donation
Althoff Catholic Logo for Althoff Catholic
  • About
    • Administration
    • Faith
    • School Profile
      • Crusader Summer Camps
  • Admissions
    • Why Althoff
      • Admission Process
      • Affordable Tuition
    • Inquire
    • Visit
    • Apply
  • Giving
    • Giving
      • Annual Giving
      • Corporate Match
      • Scholarship Giving
      • Publicly Traded Stock
      • IRA Charitable Giving
    • Give Now
    • Gifts in Memory or Honor of
    • Althoff Partners
    • Planned Giving
    • Events
    • Denim & Diamonds Gala and Auction 2026
    • What's Happening at Althoff
    • Annual Report
  • Academics
    • Curriculum
      • STREAM
      • College Credit Classes
      • The Arts
      • CEO
    • Student Support Services
      • College Counseling
      • Learning Center
    • Technology
  • Student Life
    • Student Life
    • Clubs & Organizations
    • Athletics
      • Schedule
      • Live Game Feed
    • Campus Ministry
    • Lunch
    • Parents & Friends
  • Alumni
    • Always a Crusader
    • Where Are You Now?
    • Request a Transcript
    • Hall of Inspiration
    • Events & Reunions
    • In Memoriam
    • Homecoming
Spirit Store Staff Directory Uniforms Employment

School Profile

School Profile

A HIGHER STANDARD

At Althoff Catholic, our goal is simple: prepare our students for college and life after graduation. We accomplish this through academic rigor, caring and dedicated faculty, and a nurturing environment that concentrates on finding each student's potential and maximizing their ability. We have a modern approach to education, while staying rooted in the rich tradition of our Catholic faith. Our success is their success, which is why we build a curriculum to ensure 98% of our students continue on to college with more than $8 million dollars in annual scholarship offers per class. 

ACCREDITATION

National Catholic Education Association
Diocese of Belleville
Illinois State Board of Education

AVERAGE ACT SCORES

14% scored 30 or higher
28% scored 25-29

COLLEGE READINESS

Each year, our graduates average $93,000 each in scholarship offers. 
97% of students go on to college, 2% pursue the arts, 1% in military service 
100% graduation rate

DEMOGRAPHICS

61% White/Caucasian
24% Black & African American
10% Multiracial
1% Hispanic
4% Asian & Pacific Islander

HONORS GPA

Students who take Honors-level courses receive an extra 1.87 credits per course, per semester, for grades of a "C" or higher. This is computed and averaged at the semester. An Honors GPA is reported, as well as a regular GPA. Students at Althoff Catholic taking Honors courses receive a weighted rank and a regular class rank.

A = 5.87
B = 4.87
C = 3.87
D =  1

GRADING SCALE

100-90 = A
89-80 = B
79-70 = C
69-60 = D
59 & Below = F

GPA is computed on A = 4, B = 3, C = 2, D = 1. Plus and minus grades are used.

STUDENT - TEACHER RATIO

13:1

PERCENTAGE OF TEACHERS WITH ADVANCED DEGREES

56%

*Data for the 2025 Graduating Class

  • Administration
  • Faith
  • School Profile
    • Crusader Summer Camps
Footer Logo - Althoff Catholic

Contact Us

5401 W Main St.
Belleville, IL 62226
Main Office: 618.235.1100
Fax: 618.235.9535
info@althoffcatholic.org

Quick Links

  • Spirit Store
  • Staff Directory
  • Uniforms
  • Employment

Menu

  • About
  • Admissions
  • Giving
  • Academics
  • Student Life
  • Alumni

Follow Us

© 2026 Althoff Catholic. All Rights Reserved

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.

Financial Aid