Old St. Marys School
Parish school · Grades K–8
Chicago, IL
1474 S Michigan Ave, Chicago, IL 60605
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A+Class size
- B+Years serving families
- A+Diversity
What stands out
- Smaller classes than 88% of Catholic schools in Illinois
- Growing: enrollment up 164% since 2011–12
In Chicago, Illinois, Old St. Marys School is a Catholic parish school for students from kindergarten through 8th grade. About 419 students attend, with roughly 8 students per teacher, smaller classes than 88% of Catholic elementary schools in Illinois. Enrollment is up about 164% since 2011–12. The school is part of the Archdiocese of Chicago. The school day runs about 7 hours, 175 days a year.
At a glance
- Grades
- Grades K–8
- Students
- 419
- Teachers
- 51.9 (full-time equivalent)
- Students per teacher
- 8.1
- Boys and girls
- Coed · 219 girls, 200 boys
- Religious affiliation
- Catholic · Parish school
- Diocese
- Archdiocese of Chicago
- School day
- About 7 hours
- School year
- 175 days
Reviews
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How it compares
- Smaller classes than 88% of Catholic elementary schools in Illinois (8 students per teacher).
- Larger than 91% of Catholic elementary schools in Illinois.
- Compared with 285 Catholic elementary 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 Old St. Marys School
What grades does Old St. Marys School serve?
Old St. Marys School serves grades K–8.
How many students attend Old St. Marys School?
About 419 students, with 8 students per teacher, according to official records.
How much is tuition at Old St. Marys 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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