Gibault Catholic
Diocesan school · Grades 9–12
Waterloo, IL
501 Columbia Ave, Waterloo, IL 62298
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A-Class size
- ACollege-going
- A-Years serving families
- BDiversity
What stands out
- 98% of graduates go to four-year colleges
- Serving families in Waterloo since at least 2011
In Waterloo, Illinois, Gibault Catholic is a Catholic diocesan school for students from 9th grade through 12th grade. About 192 students attend, with roughly 12 students per teacher. It has been listed in official private school records since 2011–12. The school is part of the Diocese of Belleville. The school reports that about 98% of its graduates go on to four-year colleges. The school day runs about 7 hours, 176 days a year.
At a glance
- Grades
- Grades 9–12
- Students
- 192
- Teachers
- 16.1 (full-time equivalent)
- Students per teacher
- 11.9
- Boys and girls
- Coed · 97 girls, 95 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Diocese of Belleville
- School day
- About 7 hours
- School year
- 176 days
- Graduates going to 4-year colleges
- About 98% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 59% of Catholic high schools in Illinois (12 students per teacher).
- A smaller school: fewer students than 84% of Catholic high schools in Illinois.
- Compared with 51 Catholic high schools in Illinois.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Member of
- National Catholic Educational Association
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about Gibault Catholic
What grades does Gibault Catholic serve?
Gibault Catholic serves grades 9–12.
How many students attend Gibault Catholic?
About 192 students, with 12 students per teacher, according to official records.
How much is tuition at Gibault Catholic?
Call the school to ask about tuition, financial aid and payment plans.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
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