Trinity High School (Top Ranked 草榴社区 School for 2026-27)

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Quick Facts (2026-27)

Top Ranked IL School
Grades: 9-12
Enrollment: 422 students
Yearly Tuition: $17,100
Application Deadline: None / Rolling
Source: 鉁�Verified school update

School Rankings

Trinity 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

View Data

Distribution of Students By Grade
Grade	Trinity High School
9	86
10	112
11	117
12	107

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Year Founded

1918

Student Body

Total Students

422 students

Student Body Type

All-girls

% Students of Color

46%

State avg.: 34%

Academic Profile

Total Classroom Teachers

39 teachers

Student-Teacher Ratio

11:1

National avg.:

Number of AP Courses

34 courses

Tuition & Financial Aid

Admission Deadline

None / Rolling

Yearly Tuition Cost

$17,100

View national tuition avg.

Application URL

Sports

Colors

White, Navy Blue

School Mascot

Captain Blazer

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.

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.

Source: Verified school update

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Frequently Asked Questions

How much does Trinity High School cost?

Trinity High School's tuition is approximately $17,100 for private students.

What is Trinity High School's ranking?

Trinity High School ranks among the top 20% of private schools in Illinois for: Largest student body and Most AP courses offered.

When is the application deadline for Trinity High School?

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

School Calendar

View the Trinity High School below. Note key dates such as:

Event

Date

School Closed

September 25, 2026 (Friday)

School Closed

November 16, 2026 (Monday)

Thanksgiving Break: School Closed

November 25, 2026 (Wednesday)

Christmas Break: School Closed

December 21, 2026 (Monday)

School Closed

January 18, 2027 (Monday)

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Did You Know?

The average private school tuition in Cook County, IL is $13,410 for elementary schools and $19,515 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Cook County, IL is 83% (read more about average acceptance rates across the country).