Still accepting applications for the 2024-2025 school year!

Please call our Admissions Office at 585-641-5344 to inquire.

A Different School of Thought

Our school is a thriving, diverse community of learners who engage locally and internationally to create opportunities to design, imagine, learn, and make a positive impact. 
JOIN US FOR
WALK-IN WEDNESDAYS
Drop in ANY Wednesday between 9:00 a.m. and 2 p.m.
for a guided tour and to learn more about AC!

Can't make it? Call 585.641.5344 to make an appointment today!

At A Glance

List of 8 items.

  • 29-35

    Average Graduating Class
  • 17

    Advanced Placement Classes
  • 19

    Varsity Athletic Teams
  • 375

    Students
  • 6

    School Drama Productions
  • 6:1

    Student-Faculty Ratio
  • 64

    Faculty Members
  • 75%

    of AP Exam Scores 3 or Higher

UPCOMING EVENTS

List of 4 events.

  • Oct
    7

    7th Grade Pathfinder Trip

    The seventh-grade trip to Camp Pathfinder for the 2024-2025 school year is scheduled from Monday, October 7 to Friday, October 11. Students will leave Allendale Columbia early on the morning of October 7 and return on the evening of Friday, October 11. At Camp Pathfinder, the students will participate in outdoor education activities supervised by the camp’s trained staff.
    The camp is owned and operated by AC alumnus Mike Sladden (’76). Camp Pathfinder is remote and rustic, and is located on Pathfinder Island in Algonquin Park’s Source Lake, approximately forty minutes from Huntsville, Ontario. You can visit Camp Pathfinder’s website at www.camppathfinder.com to learn more about the camp and its facilities.
  • Oct
    16

    College Testing Day (PreACT, PSAT, SAT)

    UPPER SCHOOL CLASSES ARE CANCELED on Wednesday, October 16th, and students in grades 9-12 will be engaged in grade-level activities and/or college testing: -9th graders will engage in a community-building exercise. Students will be free to stay for lunch (12:45 p.m.) or sign out with permission. -10th and 11th graders will take the PreACT and PSAT/NMSQT respectively. The test includes approximately 2 hours and 30 minutes of actual testing time, in addition to one hour for breaks and administrative tasks. Students should come prepared with #2 pencils, an approved calculator with fresh batteries and snacks and water (no nuts!) Testing will run from 8:10 a.m. - 11:30 a.m.; students may stay for lunch (12:45 p.m.) or sign out with permission. -12th graders either pre-registered to take the SAT School Day on campus or are working on their college applications at home. Students who are testing should come prepared with #2 pencils, an approved calculator with fresh batteries and snacks and water (no nuts!). Testing will run from 8:10 a.m. - 11:30 a.m.; students may stay for lunch (12:45 p.m.) or sign out with permission.
    Alumni Gym
    Emily Nevinger
  • Oct
    18

    AC Family Hispanic Heritage Movie Night

    Join us for a special Hispanic Heritage Movie Night as we come together to celebrate the richness of Hispanic culture with a screening of the family-friendly film, "Encanto"! This heartwarming Disney movie, set in Colombia, beautifully highlights the importance of family, resilience, and embracing our unique gifts—values deeply rooted in Hispanic heritage. "Encanto" is not only a captivating story for all ages but also a meaningful way to reflect on the cultural contributions of Hispanic and Latinx communities. Coming together as a school community for this event allows us to honor and celebrate the diverse cultures that shape our world. It’s an opportunity for families to enjoy an evening of entertainment, connection, and learning, while deepening our appreciation for the vibrancy of Hispanic heritage. We invite you to bring your loved ones, relax, and enjoy this magical film with us! Snacks will be provided, and everyone is welcome.
    CPC
    Angelica Davis-Bernard
  • Oct
    19

    Trunk Or Treat

    Join us Saturday, October 19th from 2pm - 4pm for our 3rd Annual Trunk or Treat! 

    Sign up HERE!

     
View All Events

Visit Us

Allendale Columbia School’s 33-acre campus is located on the east side of Rochester New York in Pittsford. Surrounded by birch trees and Allens Creek, the campus provides a serene environment where our students learn, grow, and explore. 
At Allendale Columbia, we prepare students for the world they will inherit. In our trusting and responsive environment, students in nursery through grade 12 grow in confidence and develop scholastic independence.