Columbia Grammar and Preparatory School

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Columbia Grammar and Preparatory School

Established in 1764, Columbia Grammar & Preparatory School is the oldest nonsectarian independent school in the U.S., serving Pre-K through Grade 12.

10/05/2026

Are Double Stuf Oreos truly double stuffed?⁣
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For our seventh graders, this timeless question turned into a hands-on way to learn the scientific method. Working in small groups, students formed their own hypotheses, wrote their own procedures, and ran their own investigations. Along the way, they weighed creme, identified sources of error, graphed their data in Google Sheets, and drew conclusions from what they found.⁣
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The verdict: Double Stuf lives up to its name. The data showed about twice the filling of a regular Oreo! 🍪
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09/30/2026

Join us for our fall Open Houses! Our Grammar School Open House is Thursday, October 8, and our Middle and Prep School Open House is Thursday, October 15.⁣⁣⁣
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Both evenings run from 5:00 to 6:30 p.m. and include an introduction to our School and an opportunity to connect with administrators, faculty, current students and parents. ⁣⁣⁣
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⁣⁣We look forward to welcoming families to CGPS and showcasing how our unique student-centered approach to education helps students in Pre-K through Grade 12 reach their fullest potential and highest aspirations. ⁣⁣⁣
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Visit bit.ly/4rGU9B1 to register!
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09/29/2026

The Prep School North Gym was roaring for Fall Frenzy, the first House System pep rally of the year!⁣
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Seniors led the way with costumes, props and choreography in their House entrances. Green Ivy and Silver Knights faced off in the House Cheer-Off, performing cheers the Peer Leaders and ninth graders wrote around the campfire at Camp Mason.⁣
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Then Leo the Lion, with help from forensics teacher Eric Kehs, set a cipher challenge: 13 puzzles hidden around the Prep School hallways. Purple Reign solved it first, with Blue Thunder in second and House Panther in third.⁣
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After the rally, Golden Hearts is in first place with 283 points, but there are still plenty of chances to earn points this fall.⁣
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Each House brings students from all four grades together, and this year's seniors are showing what our core value of unity looks like. 🦁📣🔍⁣
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09/28/2026

It was a perfect fall day on Friday for our annual Reservoir Run! 🍂

Students, parents, alumni, faculty, and staff ran the 1.56-mile loop around the Central Park Reservoir for a chance to earn a spot in the Reservoir Run Hall of Fame and etch their names in School history. 🏃🏃‍♀️🏃‍♂️

Thank you to Ms. Delfi for organizing another incredible year of fall fun, and congratulations to our amazing community of runners!

09/24/2026

Seniors Max M., Maxwel S. and David S. have been named Semifinalists in the 2027 National Merit Scholarship Program!⁣⁣
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⁣More than 1.2 million seniors from about 20,000 U.S. high schools took the 2025 Preliminary SAT/National Merit Scholarship Qualifying Test as juniors. The highest scorers in each state were named Semifinalists, a distinction earned by less than 1% of high school seniors nationwide.⁣⁣
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Nine seniors were also recognized for their exceptional academic promise as Commended Students: Armen A., Joshua B., Abhishek C., Grant C., Oliver G., Aden G., Daniel L., Ethan O. and Oluwatise O.⁣⁣
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⁣Congratulations to our National Merit Semifinalists and Commended Students!⁣⁣
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09/23/2026

Game on! 🎲 Last Friday, Grammar School students and their families gathered on campus for a night of laughs and friendly competition at Family Game Night. Hosted by the PA's Mosaic Committee, this School tradition is a favorite way to welcome new and returning families and build community.⁣
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From Jenga and Monopoly to chess and Candy Land, there was no shortage of fun, and the evening ended the only way it should: with a spirited round of musical chairs! 🎶 Parents even got in on the action with a round of their own, and their kids loved cheering them on.⁣
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A big thank you to Mosaic Co-Chairs Jennifer Gonzalez, Wei Qiang Liu and Mercedes Marcus for bringing everyone together!⁣
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09/16/2026

Cubs to Lions is back for year two! 🦁⁣
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Yesterday our youngest Cubs in Pre-K and kindergarten welcomed their new senior buddies to the Grammar School. Over stories, laughter and coloring School lions, they got to know the older students who will cheer them on all year long.⁣
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For the Class of 2027, it was a chance to return to where many of their own CGPS journeys began and step up as mentors. For the Classes of 2039 and 2040, it was the start of friendships with role models who show them just how far they can go.⁣
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We can't wait to watch these bonds grow! 💙⁣
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09/15/2026

Calling all CGPS alumni! 🎓

Join us from October 14–15 in Ann Arbor for a chance to reconnect and reminisce about life at CGPS. It’s the perfect chance to catch up with old friends and meet new alumni!

To RSVP, please email [email protected].

Looking forward to seeing you there! 💙

09/11/2026

Today, on the 25th anniversary of 9/11, we remember the lives lost and honor the heroic first responders for their bravery and courage.

09/09/2026

CGPS is back! 💙🤍⁣⁣
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Today, students returned to campus for the first day of school, and we couldn’t be more thrilled to have everyone together again! There were plenty of smiles as students reconnected with classmates, teachers and Leo the Lion after a refreshing summer break.⁣
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We’re looking forward to another amazing year on 93rd Street. Go Lions! 🦁 ✨⁣⁣⁣
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Address

5 West 93rd Street
New York, NY
10025

Telephone

+12127496200

Website

http://cgps.org/

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