St. Teresa High School (Top Ranked Private School for 2026-27)

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Quick Facts (26-27)

Top Ranked IL School
Grades: 9-12
Enrollment: 227 students
Application Deadline: None / Rolling
Source: ✓Verified school update

School Rankings

St. Teresa High School ranks among the top 20% of private schools in Illinois for:

School Facts

Religious Affiliation

Catholic

Grades Offered

Grades 9-12

Students By Grade

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Distribution of Students By Grade

Grade	St. Teresa High School
9	63
10	58
11	46
12	60

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Grade 9 has the most students with 63, while Grade 11 is the smallest class at 46.

Year Founded

1866

School Calendar

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Student Body

Total Students

227 students

Student Body Type

Co-ed

% Students of Color

12%

State avg.: 34%

Academic Profile

Total Classroom Teachers

21 teachers

Student-Teacher Ratio

11:1

National avg.: 11:1

Classroom Dress Code

Casual

School Membership(s)School Assoc.

National Catholic Educational Association (NCEA)

Tuition & Financial Aid

Admission Deadline

None / Rolling

Yearly Tuition Cost

$8,000 (2023-2024)

View national tuition avg.

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Sports

Colors

Blue, Orange

School Mascot

Bulldog

School Notes

St. Teresa High School is a secondary school serving the Decatur, Illinois area.
As a Catholic school committed to the development of the whole person, St. Teresa seeks to integrate faith and life by instructing students in human knowledge and skills in the light of the gospel.
As a Catholic school committed to the development of the whole person, St. Teresa seeks to integrate faith and life by instructing students in human knowledge and skills in the light of the gospel.
St. Teresa High School, a Catholic Secondary School committed to the development of the whole person, seeks to integrate faith and life by instructing students in human knowledge and skills in the light of the gospel.
Educationally, it strives to foster a reverence for learning and to equip students with the professional and technical competencies to function in a modern society; psychologically, the program hopes to guide students to an understanding of self and others and to a facility in the means of human communication.
Spiritually, St. Teresa seeks to lead students, through prayer and instruction, to a deeper and more faith-filled sense of their own worth as gifted, though flawed, individuals and to a personal experience with God.

Source: Verified school update

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Frequently Asked Questions

What schools are St. Teresa High School often compared to?

St. Teresa High School is often viewed alongside schools like Lutheran School Association by visitors of our site.

What is St. Teresa High School's ranking?

St. Teresa High School ranks among the top 20% of private schools in Illinois for: Oldest founding date.

When is the application deadline for St. Teresa High School?

The application deadline for St. Teresa High School is rolling (applications are reviewed as they are received year-round).

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Did You Know?

The average private school tuition in Illinois is $9,535 for elementary schools and $14,271 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Illinois is 89% (read more about average acceptance rates across the country).