Harbor's Alumni Association

Harbor alumni at the 2025 Spring Benefit on Friday, March 28.

Welcome to Harbor Country Day School's Alumni Association Page! Whether you graduated last year or decades ago, you’ll always be a valued member of our school community. This space is dedicated to celebrating your achievements, sharing updates, and keeping you connected with fellow alumni and the school that helped shape your journey. Explore upcoming events, stay informed with school news, and discover ways to get involved. Welcome back to Harbor... Where you can always come home!

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Featured Harbor Alumni

 

Oliver Hill, 11

CoFounder of Clearspace
Forbes 30 Under 30

It is with great pleasure and pride that Harbor Country Day School introduces Oliver Hill ‘11, an alumnus whose legacy continues to inspire and uplift our school community. A true embodiment of excellence both academically and athletically, Oliver has achieved remarkable success since leaving the halls of Tulip Knoll.

Oliver attended Georgetown University, where he studied computer science. During his time there he walked onto their Division I football team and won the role of starting placekicker. He graduated in 2019 with 100% field goal accuracy and a Bachelor of Science in computer science.

Oliver then spent two years at Amazon working on the implementation of a new machine learning model to enhance Alexa’s spatial perception and improve multi-device experience before catching the entrepreneurial bug.

Oliver’s realization that he was spending entirely too much time on his phone was the impetus for his venture, Clearspace Technologies, which he co-founded with partner Royce Branning. The Clearspace app helps users control their screen time by providing them with tools to fight phone addiction and by making their phones less addictive. So innovative and impressive was the concept, that Oliver was recognized in Forbes 30 Under 30, an annual list published by Forbes magazine that highlights 30 individuals under the age of 30 who have made significant accomplishments in various fields, such as business, technology, entertainment, healthcare, and education.

Oliver credits Harbor, not just with providing him with a strong academic foundation, but for teaching him to be unafraid of failure - a trait that has proven to be invaluable as an entrepreneur.

Oliver’s journey—from his time as a student to becoming the accomplished individual we honor tonight—embodies the very essence of Harbor’s mission to inspire confident learners and leaders.


 

2025-2026 EVENT Calendar

Alumni are warmly invited to attend events throughout the upcoming year and remain an active part of our community. Feel free to reach out to Harbor's Alumni Associate, Cate Packard at (631) 584-5555 for full details.

October 25 - Trunk or Treat
October 31 - Halloween Parade
November 27 - Annual Turkey Bowl
January 9 - Alumni Game Night
March - March Madness - Date TBA
March - HCDS Building Expansion Ribbon Cutting - Date TBA
May 21 - Field Day 
June 12 - Moving Up & Commencement 

 


 

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Our Motto

A Harbor Country Day School student ringing the Harbor bell.

For six decades, our graduates have remembered the school’s motto as one of life's truths -- that nothing comes without hard work.

All students are taught how to work with purpose and how to make it fun. 

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Scroll to View Updates from Recent Alumni Events

2022 Athletic Awards

On Friday, May 13th, Harbor Country Day School presented their Annual Athletic Awards at the All School Meeting.  Mr. Cissel was presented with a number gifts as well as a slideshow featuring students he had coached throughout the years.  That video can be found HERE.

2022 Community Barbecue

Harbor Country Day School celebrated Mr. Cissel with an all-community barbecue and picnic on Saturday, June 11, 2022 from Noon - 2pm.