Guerin College Preparatory High School is a Catholic secondary school dedicated to the education and faith development of young women and men.
Under the sponsorship of the Sisters of Providence, the school reflects a mission of love, mercy and justice, where students come to an awareness of God at work in their lives.
Guerin strives to develop the unique potential of its diverse student body through an extensive curriculum, excellent instruction, service and extracurricular programs.
It seeks to instill in its students a sense of global awareness and to empower them with the knowledge, values and skills required to become active participants and effective leaders in today's Church/world.
Quick Facts (2025-26)
- Top Ranked IL School
- Grades: 9-12
- Enrollment: 259 students
- Yearly Tuition: $7,850
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
Guerin Prep High School ranks among the top 20% of private schools in Illinois for:
Category
Attribute
Student Body
Sports offered
Extracurriculars
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades 9-12
Learning Difference Programs
Yes
Summer School Offered
Yes
School Calendar
Student Body
Total Students
259 students
Student Body Type
Co-ed
% Students of Color
59%
State avg.: 34%
Students by Grade

Academics and Faculty
Total Classroom Teachers
22 teachers
Student-Teacher Ratio
12:1
National avg.: 13:1
% Faculty w/Advanced Degree
67%
Number of AP Courses
12 courses
Advanced Courses
Advanced Placement BiologyAdvanced Placement Calculus
Advanced Placement ChemistryAdvanced Placement English
Advanced Placement Environmental ScienceAdvanced Placement European History
Advanced Placement FrenchAdvanced Placement Government
Advanced Placement Music TheoryAdvanced Placement Spanish
Advanced Placement Studio ArtAdvanced Placement U.S. History
Average ACT score
21
(Out of 36)
Classroom Dress Code
Casual
Polo shirts and khaki pants
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Yearly Tuition Cost
Tuition Notes
Plus Laptop lease, registration fee and general fees brings total to $8,995
% on Financial Aid
48%
Average Financial Aid Grant
$1,500
Admissions Director
Valerie Reiss
Sports
Total Sports Offered
14 sports
Extracurriculars
Total ExtracurricularsTotal Extra-curric.
27 extracurriculars
ExtracurricularsExtra-curric.
African American ClubAmbassadors
Art ClubAsian Pacific Club
Broadcast ClubCampus Ministry Organization
ChessDance Club & Dance Team
Debate ClubFrench Club
Freshman ClassIrish Club
Italian ClubJapanes Culture & Animation Club
Junior ClassKey Club
Lead TutorsLiturgical Choir
MentorsPolish Club
S.A.D.D.Sophomore Class
Spanish ClubStudent Council
Tech TeamThe Voyager (Newspaper)
Traces (Yearbook)
School Notes
- Guerin College Preparatory High School, River Grove, will begin the 2009-2010 school year with all of its students carrying a laptop computer to class on a daily basis. Guerin Prep, a Catholic secondary school dedicated to the education and faith development of approximately 615 young men and women, began the one-to-one computing program in the fall of 2007 with the freshmen and sophomore classes. Each fall since a new class has been added to maximize the school's mission to prepare students for success in college and career. This technology, combined with the school's curriculum and a well-versed faculty allows students to explore diverse cultures and new perspectives; write and edit reports, essays and presentations electronically; plan, prepare and present creative multimedia projects; access online tutoring and communicate with teachers and others worldwide. Electronic textbooks for most core classes are loaded on the laptop. In addition to the laptop program, Guerin Prep also has a special program for honors students as well as a structured course of study for students needing special assistance. Guerin Prep is especially proud of its 22-acre campus, which provides fields and facilities enabling all athletes to practice in a safe and secure environment. Sponsored by the Sisters of Providence, Guerin Prep was founded as an all-girls school in 1962 and changed its mission to co-education in 2004. Guerin Prep proudly claims both Mother Theodore Guerin and Holy Cross high schools as its foundation schools. Visit www.guerinprep.org
Source: Verified school update
Frequently Asked Questions
How much does Guerin Prep High School cost?
Guerin Prep High School's tuition is approximately $7,850 for private students.
What sports does Guerin Prep High School offer?
Guerin Prep High School offers 14 interscholastic sports: Baseball, Basketball, Cheering, Cross Country, Dance, Football, Golf, Ice Hockey, Soccer, Softball, Track and Field, Volleyball, Weightlifting and Wrestling. Guerin Prep High School is ranked as one of the top 20% of private schools in Illinois for most sports offered.
What is Guerin Prep High School's ranking?
Guerin Prep High School ranks among the top 20% of private schools in Illinois for: Largest student body, Most sports offered and Most extracurriculars offered.
When is the application deadline for Guerin Prep High School?
The application deadline for Guerin Prep High School is rolling (applications are reviewed as they are received year-round).
School Reviews
Endorse Guerin Prep High School. Endorsements should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
- Academic or athletic awards
Recent Articles

Transferring from Public to Private School Mid-Year: What to Expect
Considering a mid-year transfer from public to private school? Learn what to expect with admissions, academic placement, social adjustment, and financial aid to ensure a smooth transition.

A Guide to Day vs. Boarding School: Which Is Right for Your Family
Discover the key differences between day and boarding schools to determine the best fit for your child. Explore benefits, costs, lifestyle factors, and questions to help guide your family’s decision.

The A to Z of Private Schools 2025
Explore the A to Z of private schools in 2025—from admissions to tuition—offering parents and educators clear insights into today’s options.