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Be a Crusader

welcome to althoff catholic

At Althoff Catholic we partner with our students and their families to build their academic, athletic, artistic and altruistic abilities, so that when they leave our school and enter college, they know who they are. Crusaders are modern day change agents who are not only learning, but teaching the world how to live, work, play and pray. Learn more about us by exploring the pages of our website. Call our Admissions Office any time at 618.235.1100 ext. 116. We look forward to hearing from you soon!

a higher standard

Learn more about how we concentrate on finding each student's potential and maximizing their ability here.

program of studies

View our program of studies by class year and our complete course catalog here.

faith & community

"Rooted in Jesus Christ and Catholic values, we aspire to achieve our personal best in all we do." These are the words with which we begin each school day. In starting each day with prayer, coming together for weekly masses and annual class retreats, the teach of Christ is at the center of everything we do at Althoff Catholic High School. Our students are presented with several opportunities to serve the community, including the St. Vincent DePaul Soup Bus, Big Brothers Big Sisters, Teen Court and more. Visit the student life section of for more information.


We are proud of our legacy of excellence in athletics. With state championships in nine different sports our students have a strong spirit of determination. In addition to our success on the fields/courts, our student-athletes excel in the classroom. Each year over 90% of our sports teams earn IHSA Team Academic Achievement Awards for maintaining a cumulative team GPA of 3.0 or higher during their seasons. 

fine and performing arts

At Althoff Catholic we have many opportunities for students to shine in the creative arts. Through our music, performing and fine arts classes and clubs, your child can grow and express themselves in new ways. From marching band to mixed chorus and an outstanding drama department, there truly is something for everyone! Visit the student life pages to learn more.