Apply Now Give Read Our Blog

About Us

Althoff At A Glance

Althoff Catholic College Preparatory High School has been preparing students for success in life for more than 50 years. We concentrate 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 $10 million dollars in annual scholarship offers per class. *Statistics based on a 5-year average.

College readiness

  • 98% of students go on to college (5-year average) 
  • 32 Advanced College Credits available through the Saint Louis University 1-8-1-8 program
  • Each year students are offered an average of $120,00 each in college scholarships (5-year average) 


class of 2019 act Scores


Top 10%: 32

Top 20%: 30.1

Top 30%: 28.7

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.


Grading scale

100-92.50 = A
92.49-84.50 = B
84.9-76.50 = C
76.49-68.50 = D
68.49 & Below = F

GPA is computed on A=4, B=3, C=2, D=1. No plus or minus grades are used.

Extracurricular Activities

  • More than 30 clubs in the following categories: academic, arts, community services, leadership music and journalism.
  • 13 sports teams for boys and 12 sports teams for girls 

2018-2019 enrollment

Freshmen: 78
Sophomores: 78
Juniors: 105
Seniors: 81

Student - Teacher Ratio


Percentage of teachers with advanced degrees