Trinity High School, founded in 1918 by the Dominican Sisters of Sinsinawa Wisconsin, is a Catholic college-preparatory high school for young women.
Trinity has earned an excellent reputation as a premier high school with a strong commitment to educating young women and preparing them for the future: intellectually, spiritually, socially, and morally.
The school community guides young women in developing skills for lifelong learning, an ethnic of care and the desire for excellence.
Each student is recognized as unique. In a nurturing, catholic, college preparatory enviornment, she is encouraged to become self-directed toward responsible participation in the Christian community in order to impact society, Church and family in the twentyfirst century.

Quick Stats (2021-22)

Top Rankings

Trinity High School ranks among the top 20% of private schools in Illinois for:

Category
Attribute

School Overview

Religious Affiliation
Grades Offered
Grades 9-12

Student Body

Total Students
454 students
Student Body Type
% Students of Color
53%
State avg.: 34%
Students by Grade
Trinity High School Student By Grade

Academics and Faculty

Total Classroom Teachers
40 teachers
Student : Teacher Ratio
11:1
National avg.: 13:1

Tuition and Acceptance Rate

Admission Deadline
None / Rolling

School Notes

  • Trinity High School, founded in 1918 by the Dominican Sisters of Sinsinawa Wisconsin, is a Catholic college-preparatory high school for young women. Trinity has earned an excellent reputation as a premier high school with a strong commitment to educating young women and preparing them for the future: intellectually, spiritually, socially, and morally. The school community guides young women in developing skills for lifelong learning, an ethnic of care and the desire for excellence. Each student is recognized as unique. In a nurturing, catholic, college preparatory enviornment, she is encouraged to become self-directed toward responsible participation in the Christian community in order to impact society, Church and family in the twentyfirst century.

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Did You Know?

The average private school tuition in Cook County, IL is $9,483 for elementary schools and $16,147 for high schools (read more about average private school tuition across the country).
The average acceptance rate in Cook County, IL is 89% (read more about average acceptance rates across the country).

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