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St. Mary Immaculate Parish School

15629 S Route 59 Plainfield, IL 60544

Quick Facts (2026-27)

  • Top Ranked IL School
  • Grades: Prekindergarten-8
  • Enrollment: 360 students
  • Application Deadline: None / Rolling
  • Source: ✓Verified school update
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Quick Facts (2026-27)

  • Top Ranked IL School
  • Grades: Prekindergarten-8
  • Enrollment: 360 students
  • Application Deadline: None / Rolling
  • Source: ✓Verified school update

School Rankings

St. Mary Immaculate Parish School ranks among the top 20% of private schools in Illinois for:

Category
Attribute
Student Body

School Facts

Religious Affiliation
Grades Offered
Grades Prekindergarten-8
Students By Grade
School Calendar

Student Body

Total Students
360 students
Student Body Type
Co-ed
% Students of Color
19%
State avg.: 34%

Academic Profile

Total Classroom Teachers
23 teachers
Student-Teacher Ratio
16:1
National avg.:
School Membership(s)School Assoc.

Tuition & Financial Aid

Admission Deadline
None / Rolling

School Notes

  • St Mary Immaculate Parish School partnership with our priests, our administration, our faculty and our parents, we will establish a safe and supportive environment, which centers on faith development and on academic success for every student.
  • We will consider the development of each child as a whole person whose successes include the elements of spiritual, moral, intellectual, emotional and social growth.
  • We will expect our students to be aware of the cultural, racial, and ethnic differences, which are important influences in their psychological, social, and moral development.
  • We will expect our students to recognize and to respect the individual differences, which are important to their development as children as they mature.
  • We will strive to instill awareness in our students to become lifelong learners whose beliefs include the teachings of Jesus Christ, a sense of community in our Parish and in our World, and a sense of responsibility to serve others.
  • St Mary Immaculate Parish School partnership with our priests, our administration, our faculty and our parents, we will establish a safe and supportive environment, which centers on faith development and on academic success for every student.
  • We will consider the development of each child as a whole person whose successes include the elements of spiritual, moral, intellectual, emotional and social growth.
  • We will expect our students to be aware of the cultural, racial, and ethnic differences, which are important influences in their psychological, social, and moral development.
  • We will expect our students to recognize and to respect the individual differences, which are important to their development as children as they mature.
  • We will strive to instill awareness in our students to become lifelong learners whose beliefs include the teachings of Jesus Christ, a sense of community in our Parish and in our World, and a sense of responsibility to serve others.
Source: Verified school update

Frequently Asked Questions

What schools are St. Mary Immaculate Parish School often compared to?
St. Mary Immaculate Parish School is often viewed alongside schools like Holy Family School by visitors of our site.
What is St. Mary Immaculate Parish School's ranking?
St. Mary Immaculate Parish School ranks among the top 20% of private schools in Illinois for: Largest student body.
When is the application deadline for St. Mary Immaculate Parish School?
The application deadline for St. Mary Immaculate Parish School is rolling (applications are reviewed as they are received year-round).

School Reviews

5  
St. Mary Immaculate has been an answered prayer. The teachers are all excellent - truly. The facility is beautiful and everyone is genuinely invested in the success of students. The sense of community is great, too. Really nice families who put God and their faith, first in their lives. We absolutely love it and recommend it highly. The one downside is a music program that doesn't really exist. Wish that could be fixed.
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Did You Know?

The average private school tuition in Will County, IL is $7,135 for elementary schools (read more about average private school tuition across the country).
The average acceptance rate in Will County, IL is 99% (read more about average acceptance rates across the country).

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