The Agnes Irwin School is a nationally recognized all-girls' independent college preparatory school for PreK-grade 12 that offers a rigorous academic program, coupled with competitive sports and diverse visual and performing arts.
Agnes Irwin combines current educational thinking and practices with the traditional values of a liberal arts education.
Our mission is to empower girls to learn, to lead, and to live a legacy.
Quick Stats (2025)
- Top Ranked PA School
- Grades: Nursery/Preschool-12
- Enrollment: 635 students
- Yearly Tuition: $40,950
- Acceptance rate: 50%
- Average class size: 15 students
- Application Deadline: Dec. 6 / rolling
- Source: Verified school update
Top Rankings
The Agnes Irwin School ranks among the top 20% of private schools in Pennsylvania for:
Category
Attribute
SAT Score
ACT Score
Acceptance Rate
Student Body
Sports offered
School History
School Overview
Religious Affiliation
Grades Offered
Grades Nursery/Preschool-12
Year Founded
1869
Colors
Blue, Gold
Summer School Offered
Yes
School Calendar
Student Body
Total Students
635 students
Student Body Type
% Students of Color
27%
State avg.: 27%
Students by Grade

Academics and Faculty
Total Classroom Teachers
123 teachers
Student : Teacher Ratio
5:1
National avg.: 13:1
% Faculty w/Advanced Degree
69%
Average Class Size
15 students
List of Courses Offered
Average SAT score
1330
(Out of 1600)
Average ACT score
31
(Out of 36)
Matriculation DataMatric. Data
Classroom Dress Code
Formal
uniform
Tuition and Acceptance Rate
Admission Deadline
Dec. 6 / rolling
Yearly Tuition Cost
$40,950
Tuition Notes
Tuitions vary by grade/division, starting at $25,000 for PK and ending with Upper School at $46,250. No additional required fees.
% on Financial Aid
32%
Average Financial Aid Grant
$22,000
Acceptance Rate
50%
National avg.: 81%
Admissions Director
Allison Price
Sports
Total Sports Offered
14 sports
Sports
School Notes
- School Motto: Empowering Girls Since 1869
- School Mascot: Gus The Owl
- The Center for the Advancement of Girls creates opportunities that empower our community of learners to live their lives with intention, to cultivate their unique voice and to build confidence. The Center seeks to address three essential questions: What is best for girls? What do girls need to thrive? What does it mean to empower girls?
- We ensure that every girl at Agnes Irwin is seen, valued and celebrated as she navigates the complexities and layers of her identity. By staying abreast of best practices in educating girls, the Center is the catalyst for creating the most responsive environment for every girl to become her best, most empowered self.
- Sample of notable school alumni/alumnae:
- Lizzie Shacklett, Class of 2026 - Selected for the United States Senate Youth Program -
- Rachel Avery, Class of 2025 - Main Line Girls Student of the Week -
Source: Verified school update
Frequently Asked Questions
How much does The Agnes Irwin School cost?
The Agnes Irwin School's tuition is approximately $40,950 for private students.
What is the acceptance rate of The Agnes Irwin School?
The acceptance rate of The Agnes Irwin School is 50%, which is lower than the national average of 81%. The Agnes Irwin School's acceptance rate is ranked among the top private schools in Pennsylvania with low acceptance rates.
Who are famous alumni from The Agnes Irwin School?
The Agnes Irwin School famous alumni include: Lizzie Shacklett, Class of 2026 - Selected for the United States Senate Youth Program and Rachel Avery, Class of 2025 - Main Line Girls Student of the Week.
What sports does The Agnes Irwin School offer?
The Agnes Irwin School offers 14 interscholastic sports: Basketball, Crew, Cross Country, Diving, Field Hockey, Golf, Lacrosse, Soccer, Softball, Squash, Swimming, Tennis, Track and Field and Volleyball. The Agnes Irwin School is ranked as one of the top 20% of private schools in Pennsylvania for most sports offered.
What is The Agnes Irwin School's ranking?
The Agnes Irwin School ranks among the top 20% of private schools in Pennsylvania for: Highest average SAT score, Highest average ACT score, Lowest average acceptance rates, Largest student body, Most sports offered and Oldest founding date.
When is the application deadline for The Agnes Irwin School?
The application deadline for The Agnes Irwin School is Dec. 6 / rolling (applications are due on Dec. 6 but additional applications are reviewed year-round as space permits ).
School Reviews
5 3/22/2024
We recently joined AIS from another top-ranked all-girls private school in the Mainline area and our experience has completely exceeded our expectations! AIS is an incredibly positive and empowering school for my daughters and their academics are absolutely outstanding! Our daughters are thriving and excelling beyond our wildest dreams and they teach the girls how to lead with empathy and kindness. My daughter was bullied mercilessly at her former school, but at AIS they have absolutely no tolerance for bullying or unkind behavior whatsoever. If you are seeking a school that fosters a positive, happy learning environment as well as superior academics, AIS is the school for you.
5 5/26/2020
My girls love this school and jump out of the car each morning excited to see their teachers and friends. AIS has the perfect balance of a nurturing environment and excellent education.
5 9/11/2019
I have a few daughters at this school and am constantly amazed at the warmth and endless support from the faculty. Each teacher goes above and beyond to help educate my girls in the best way possible to their individual needs and learning styles. I see my girls developing into intelligent, kind, mindful, thoughtful and happy girls. I attribute this development to this amazing school.
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