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.
Quick Facts (2025-26)
- Top Ranked IL School
- Grades: 9-12
- Enrollment: 227 students
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
St. Teresa High School ranks among the top 20% of private schools in Illinois for:
Category
Attribute
School History
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades 9-12
Year Founded
1866
Colors
Blue, Orange
School Calendar
Student Body
Total Students
227 students
Student Body Type
Co-ed
% Students of Color
12%
State avg.: 34%
Students by Grade
Academics and Faculty
Total Classroom Teachers
21 teachers
Student-Teacher Ratio
11:1
National avg.: 13:1
Classroom Dress Code
Casual
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
School Notes
- School Mascot: Bulldog
Source: Verified school update
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).
Related Schools
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Popular comparisons: St. Teresa High School vs. Lutheran School Association
People that viewed St. Teresa High School also viewed these schools: Grace Baptist Academy, St. Ignatius College Prep, Depaul College Prep, Northridge Preparatory School and Notre Dame College Prep.
The nearest high school to St. Teresa High School is Lutheran School Association (1.9 miles away)
The nearest elementary school is Antioch Christian Academy (1.1 miles away)
The nearest preschool is Our Lady Of Lourdes School (1.5 miles away)
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School
Location
Miles
Quick Facts
Grace Baptist Academy
(Baptist)
2812 S Walnut St
Springfield, IL 62704
(217) 522-2881
Springfield, IL 62704
(217) 522-2881
38.2 miles
Gr: 1-12 | 12 students
St. Ignatius College Prep
(Catholic)
1076 West Roosevelt Road
Chicago, IL 60608
(312) 421-5900
Chicago, IL 60608
(312) 421-5900
153.7 miles
Gr: 9-12 | 1,373 student Avg. class size: 15 students Tuition & acceptance rate listed
3633 N California Ave
Chicago, IL 60618
(773) 539-3600
Chicago, IL 60618
(773) 539-3600
157.7 miles
Gr: 9-12 | 942 students Avg. class size: 20 students Sports: 13 Tuition listed
Northridge Preparatory School
All-boys (Catholic)
8320 W Ballard Rd
Niles, IL 60714
(847) 375-0600
Niles, IL 60714
(847) 375-0600
161 miles
Gr: 6-12 | 315 students Avg. class size: 15 students Sports: 7 Tuition listed
7655 W Dempster Street
Niles, IL 60714
(847) 965-2900
Niles, IL 60714
(847) 965-2900
161.1 miles
Gr: 9-12 | 734 students Sports: 15 Tuition listed
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