Academic Excellence and an Enriching High School Experience

Alleman Catholic High School is a Catholic educational community that by our actions, values, and modeling, exemplifies a caring atmosphere in a faith-lived community.

We strive to provide a foundation for the religious, moral, intellectual, emotional and social development of each individual. We’re determined to produce a catalyst for change and for growth in the Catholic community as well as in society.



Alleman Catholic High School is mindful of the uniqueness of individuals and appreciative of the differences among us. We provide an academic atmosphere that promotes educational experiences needed for each student to meet his/her potential. We not only educate our students, we help FORM them.

$6.1 Million


Last year graduating seniors from Alleman High School were awarded a combined $6.1 million on scholarship money. 78% of our students went on to a 4-year degree program, 16% of students went on to a 2-year degree program, and 2% of our students joined a military or vocational program.

Student Life


Alleman Catholic High School considers the athletic experience to be an important part of our students' overall development and are proud that upwards of 65% of our student body participate in one or more of the programs. We will work hard to maintain the proper perspective that a student-athlete is a student first and an athlete second.

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Our Faith… in Action

View our 2023-2024 Spiritual Schedule Here!

Alleman Catholic High School develops a faith-lived community by exemplifying gospel values through Catholic education. By our actions, values, and modeling, we exemplify a caring atmosphere in a faith-lived community.



Alleman students benefit from an individualized academic program that is grounded in faith and enrichment.  The average ACT composite of Alleman students is 5 points higher than that of other local schools.  Through a predominantly college-preparatory environment, Alleman works hard to prepare your student for the next step in their education. 

Cheer on the Pioneers!


Alleman Alumni

Whether it has been 5 days, or 35 years, it is never too late to be in touch. Your continued support and involvement is vital for ensuring that future alumni can lead lives of purpose and excellence.


Varsity Sports Offered

Alleman houses 20 exceptional varsity programs and is a proud member of the Western Big 6 and Illinois High School Association.

“Fixing our eyes on Jesus, the pioneer and perfecter of faith. For the joy set before him he endured the cross, scorning its shame, and sat down at the right hand of the throne of God.” - Hebrews 12:2

“I love the experience our family had at Alleman Catholic High School. Our children grew in faith and Alleman really prepared them for their futures.”


Contact us to learn more about Alleman or to schedule a visit.

If you have any questions about Alleman Catholic High School or would like to learn more about us or schedule a visit, please fill out the form to the right.