Mater Dei High School
Diocesan school · Grades 9–12
Breese, IL
900 Mater Dei Dr, Breese, IL 62230
Overall grade: B
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A-Class size
- B+College-going
- A-Years serving families
- B-Diversity
What stands out
- Smaller classes than 61% of Catholic schools in Illinois
- Serving families in Breese since at least 2011
Mater Dei High School is a Catholic diocesan school in Breese, Illinois, for students from 9th grade through 12th grade. It has about 357 students and around 12 students per teacher, smaller classes than 61% of Catholic high schools in Illinois. 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 68% of its graduates go on to four-year colleges. Students attend about 7 hours a day, 178 days a year.
At a glance
- Grades
- Grades 9–12
- Students
- 357
- Teachers
- 30.5 (full-time equivalent)
- Students per teacher
- 11.7
- Boys and girls
- Coed · 182 girls, 175 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Diocese of Belleville
- School day
- About 7 hours
- School year
- 178 days
- Graduates going to 4-year colleges
- About 68% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 61% of Catholic high schools in Illinois (12 students per teacher).
- A smaller school: fewer students than 53% 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 Mater Dei High School
What grades does Mater Dei High School serve?
Mater Dei High School serves grades 9–12.
How many students attend Mater Dei High School?
About 357 students, with 12 students per teacher, according to official records.
How much is tuition at Mater Dei High School?
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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