Allendale Columbia is a leading independent school for students age 18 months through grade 12.
Allendale Columbia's Centers for Entrepreneurship; Global Engagement; and Invent Center for STEM & Innovation provide students with opportunitites to engage locally and internationally.
Our students come from 26 school districts, 42 zip codes, and 9 nations abroad.
We operate two international houses near campus to provide housing for international students and to supplement our host family stay option.
Allendale Columbia is the most diverse school in Rochester, according to recent data in the Rochester Business Journal's Annual School Report.
Quick Stats (2024-25)
- Top Ranked NY School
- Grades: Nursery/Preschool-12
- Enrollment: 356 students
- Acceptance rate: 84%
- Average class size: 8 students
- Application Deadline: Jan. 31 / rolling
- Source: Verified school update
Top Rankings
Allendale Columbia School ranks among the top 20% of private schools in New York for:
Category
Attribute
Student Body
Sports offered
Extracurriculars
School History
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Nursery/Preschool-12
Year Founded
1890
Summer School Offered
Yes
Summer Program Details
Student Body
Total Students
356 students
Student Body Type
Co-ed
% Students of Color
28%
State avg.: 40%
Students by Grade
Academics and Faculty
Total Classroom Teachers
46 teachers
Student : Teacher Ratio
8:1
National avg.: 13:1
% Faculty w/Advanced Degree
71%
Average Class Size
8 students
Number of AP Courses
12 courses
Advanced Courses
AP Biology, AP Calculus AB, AP Calculus BC, AP Computer Science A, AP Computer Science Principles, AP English Language and Composition, AP English Literature and Composition, AP European History, AP French Language and Culture, AP Physics 2, AP Physics I, AP Spanish Language and Culture, AP Statistics, Computer Science (Post-AP Course), Science Writing and Research (Post-AP Course)
Average SAT score
1256
(Out of 1600)
Average ACT score
28
(Out of 36)
Matriculation DataMatric. Data
Classroom Dress Code
Casual
Tuition and Acceptance Rate
Admission Deadline
Jan. 31 / rolling
Tuition Notes
Tuition varies by grade level and is updated annually. Please email admissions@allendalecolumbia.org to request our current tuition rates.
% on Financial Aid
56%
Average Financial Aid Grant
$13,000
Acceptance Rate
84%
National avg.: 85%
Admissions Director
Shelby Riter
Admissions Associate
Abhi Somaskanda
Sports
Total Sports Offered
11 sports
Sports
Extracurriculars
Total ExtracurricularsTotal Extra-curric.
25 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
Advocacy Clubs, Best Buddies, Community Service, Debate, Entrepreneurship, Gardening, Global Engagement, Literary Magazine, Robotics, STEM, Student Leadership, Summer LEAP, TEDx, Yearbook
Arts and Music Programs:
Acting, Band, Ceramics, Choir, Creative Movement, Digital Photography, Drama Production, Filmmaking, Graphic Design
Recreational Athletic Programs:
Intramural Sports, Ski Club
Advocacy Clubs, Best Buddies, Community Service, Debate, Entrepreneurship, Gardening, Global Engagement, Literary Magazine, Robotics, STEM, Student Leadership, Summer LEAP, TEDx, Yearbook
Arts and Music Programs:
Acting, Band, Ceramics, Choir, Creative Movement, Digital Photography, Drama Production, Filmmaking, Graphic Design
Recreational Athletic Programs:
Intramural Sports, Ski Club
School Notes
- Leading, independent, co-ed day school
- Students ages 18 months - Grade 12
- Diverse international residential program
- Student-to-teacher ratio of 6:1
- Center for STEM and Innovation
- Center for Entrepreneurship
- Center for Global Engagement
- "Academically speaking, there is no better preparation for the future than Allendale Columbia education. Beyond the classroom, the values and life skills taught at Allendale Columbia are applicable to every aspect of life.' Rob C. '11, Harvard University '15.
- "This is my first year, and I've never had this much fun at school." Megan C. '17
- "Here, we teach students to reach out to their teachers, to initiate further conversation, to dig deeper. Student-teacher relationships are cherished and as a result, every student is known and challenged." Mick Gee, Former Head of School
- "Actively participating in class can sometimes be challenging, but because it was so encouraged at AC, it has become infinitely easier for me." Sarina S. '11, Princeton University '16
- "I find myself well-prepared for the challenging courses offered in college compared to other students in my classes." Yunmei Z. '12, Cornell University '16
Source: Verified school update
Frequently Asked Questions
What schools are Allendale Columbia School often compared to?
Allendale Columbia School is often viewed alongside schools like The Harley School by visitors of our site.
What is the acceptance rate of Allendale Columbia School?
The acceptance rate of Allendale Columbia School is 84%, which is higher than the national average of 79%.
Does Allendale Columbia School offer a summer program?
Yes, Allendale Columbia School offers a summer program. Visit their summer school page for more information.
What sports does Allendale Columbia School offer?
Allendale Columbia School offers 11 interscholastic sports: Baseball, Basketball, Bowling, Cross Country, Golf, Soccer, Softball, Swimming, Tennis, Track and Field and Volleyball. Allendale Columbia School is ranked as one of the top 20% of private schools in New York for most sports offered.
What is Allendale Columbia School's ranking?
Allendale Columbia School ranks among the top 20% of private schools in New York for: Largest student body, Most sports offered, Most extracurriculars offered and Oldest founding date.
When is the application deadline for Allendale Columbia School?
The application deadline for Allendale Columbia School is Jan. 31 / rolling (applications are due on Jan. 31 but additional applications are reviewed year-round as space permits ).
School Calendar
View the Allendale Columbia School yearly calendar below. Note key dates such as:
Event
Date
Holiday Break School Closed
December 23, 2024 (Monday)
Lower School Open House
January 21, 2025 (Tuesday)
All School Open House
March 22, 2025 (Saturday)
Spring Break No School Little School-12th Grade
April 14, 2025 (Monday)
Memorial Day Full School Closed
May 26, 2025 (Monday)
School Reviews
5 8/5/2021
Our grandchildren attend Allendale Columbia and we are staunch supporters of this School of Excellence. Although it is noteworthy for its creative and rigorous Academics we are most impressed with the family atmosphere, inclusion, and fostering of school, community, and worldwide focus and development. It takes a Village to Raise a Child and AC embodies that concept. As grandparents, we have always felt welcomed and included. We recall fondly many Grandparent days, Strawberry Breakfast, Innovation Days, and fundraising Galas, etc. We would come to AC weekly for lunch with our grandson. The farm-to-table, locally sourced organic food was always delicious and how food should be provided to growing children. What was most impressive was AC's handling of the Pandemic. The school the first one to close in Monroe County on Friday in March 2020 opened that Monday in virtual classrooms. Our grandson said the only difference with this time online was that he could not whisper in his classmate's/friend's ears. In the Fall of 2020, the students returned to 5 days in-person 8 am-3 pm providing students with the education, connection, and camaraderie they need. Our grandsons treasure this school so much they would gladly go year-round with no summers off. I cannot express with words the depth of appreciation and gratitude I have for all the faculty, staff, and administrators that demonstrate such commitment to this school and its students. Thank you for all you do to make AC the special school it is!!!
5 7/24/2015
Allendale Columbia is a school that is evolving - I love what the school is doing with May Term offerings, and it allows for my two children to be seen as individuals with individual needs. They are both actively involved in music, and extra-curricular activities, like the Lego Robotics teams and pit band. It is a wonderful feeling knowing that the sports program is a no-cut policy, where my kids can feel like they can try a sport and be part of a team without being cut out of the process from the start. I highly recommend this school for anyone who wants a unique, student-centric, and high quality education for their child.
5 7/24/2015
Allendale Columbia is a completely different school than it was two years. Thanks primarily to the arrival of Mick Gee, the new Head of School in 2012 and John Sullivan, the new Head of the Lower School in 2011, AC is being restructured and set on a new path. The school has freed itself from standardized testing and bureaucrat regulations to instead enable it to quickly respond to new educational trends and the are responsible for the fine strokes. The students feel like they are part in school seven days a week if she could. Another key item that makes AC noteworthy is their ability to serve children with needs on both ends of the spectrum. They have employed math and reading stimulation. At the beginning of the 2012 school year, AC responded to a need in a matter of weeks to implement their new STEM program
5 4/23/2013
As it concerns the Lower School, Allendale Columbia is a completely different school than it was two years. Thanks primarily to the arrival of Mick Gee, the new Head of School in 2012 and John Sullivan, the new Head of the Lower School in 2011, AC is being restructured and set on a new path. The school has freed itself from standardized testing and bureaucrat regulations to instead enable it to quickly respond to new educational trends and the individual needs of the students. Lower School education is now project and inquiry based learning with real world relevance. The faculty paints the broad strokes of the curriculum, but the students are responsible for the fine strokes. The students feel like they are part of a higher purpose and can participate in projects that they are passionate about, have a stake in, and can help make a difference. Learning is now interesting and fun.
5 4/16/2013
Parents are involved and have many opportunities to connect with other parents to discuss their child(ren) and to support each other. This spirals into students who benefit from this community atmosphere and who develop into mature adults.
5 4/14/2013
The teachers are amazing and extremely supportive . The environment is safe and nurturing and children are allowed to blossom to their fullest potential. Amazing school. We are here to stay!
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