Dr. Joseph W. Sullivan

Proud father of 4, Life long learner, Ed.D., Principal, Coach, Advocate for ALL students, Rugby enthusiast.

[Dr. Joseph W. Sullivan @jsullivan165]

What an incredible AAPI Heritage Night!From the amazing performances to the delicious food and the celebration of culture and community, our students organized an amazing event. @ski626 @RonGamma @cvmauricio5 @KFloresChapp #WeAreChappaqua

[Dr. Joseph W. Sullivan @jsullivan165]

Beautiful day for playoff lacrosse as Greeley takes on Nyack in the first round! The energy is high and the Quakers are leading closing out the first. 9-1. Let’s go Greeley! 🥍@GreeleySports @ski626 @cvmauricio5 @KFloresChapp @RonGamma #WeAreChappaqua

[Dr. Joseph W. Sullivan @jsullivan165]

It’s great to see the campus come alive with so much activity. From lacrosse to flag football to tennis, our fields and courts are filled with great energy!!! #GoGreeleyGo #WeAreChappaqua @GreeleySports @ski626 @RonGamma @KFloresChapp @cvmauricio5

[Dr. Joseph W. Sullivan @jsullivan165]

Big shoutout to the Horace Greeley Jazz Band for an incredible performance of Cottontail by Duke Ellington 🎷🔥#WeAreChappaqua @ski626 @RonGamma @cvmauricio5 @KFloresChapp @Lauren_Olmo

[Dr. Joseph W. Sullivan @jsullivan165]

The Greeley Science Olympiad team has arrived to States at Le Moyne College prepared, focused, and ready to go. 🧪🔬🧡💙 #WeAreChappaqua @ski626 @RonGamma @cvmauricio5 @KFloresChapp

[Dr. Joseph W. Sullivan @jsullivan165]

Greeley-Jay strikes first and takes a 1–0 lead over Pawling after one! 🏒 #LetsGo
@RonGamma @GreeleySports @cvmauricio5 @ski626 @KFloresChapp @chackerman1

[Dr. Joseph W. Sullivan @jsullivan165]

Strong start on the ice! Greeley–Jay leads 2–1 at the end of the first period. Keep the momentum going! 💪❄️@ski626 @RonGamma @KFloresChapp @cvmauricio5

[Dr. Joseph W. Sullivan @jsullivan165]

It’s been a great week!!! First-year teachers came together to collaborate, reflect, and share ideas on how we build, contribute to, and sustain positive communities at Greeley and beyond. 🧡💙#WeAreChappaqua @ski626 @RonGamma @KFloresChapp

[Dr. Joseph W. Sullivan @jsullivan165]

Shoutout to Greeley Wrestling for a great performance on Senior Night 🤼‍♂️💪
An awesome way to honor the seniors - grit, leadership, and pride on full display. #WeAreChappaqua @ski626 @RonGamma @KFloresChapp

[Dr. Joseph W. Sullivan @jsullivan165]

Great team win tonight for Greeley! Playing for each other from start to finish. 💪💙🏀#WeAreChappaqua @ski626 @RonGamma @KFloresChapp

[Dr. Joseph W. Sullivan @jsullivan165]

Locked in and ready to go. Greeley vs. Rye. Let’s go!!! 💪🏻🏀

[Dr. Joseph W. Sullivan @jsullivan165]

The Greeley SciO team is hard at work engaging in chem labs and experimental design projects for the Boyceville Invitational 🧪🔬#WeAreChappaqua

[Dr. Joseph W. Sullivan @jsullivan165]

Huge shout out to our incredible LIFE School Informational student panel, dedicated teachers, and all the students & families who came out tonight to learn more about LIFE School & the IB CP #LIFESchool #WeAreChappaqua @ski626 @RonGamma @KFloresChapp

[Dr. Joseph W. Sullivan @jsullivan165]

Let’s go Greeley Soccer!!!!

[Dr. Joseph W. Sullivan @jsullivan165]

The LIFE School students took learning to new heights today at The Adventure Park. Teamwork, courage, & communication were in full swing on the high ropes course, building trust & confidence one challenge at a time! #WeAreChappaqua @ski626 @RonGamma @KFloresChapp @cvmauricio5

[Dr. Joseph W. Sullivan @jsullivan165]

Our Science Olympiad students brought incredible energy and curiosity to today’s first practice!!🧫🧬🔬🔭⚗️🧪 #WeAreChappaqua #ScienceOlympiad #FutureScientists @ski626 @RonGamma @KFloresChapp @cvmauricio5

[Dr. Joseph W. Sullivan @jsullivan165]

Great work Greeley!!! 🏐#WeAreChappaqua @ski626 @RonGamma @KFloresChapp @cvmauricio5

[Dr. Joseph W. Sullivan @jsullivan165]

Let’s go Quakers!!!!!!

[Dr. Joseph W. Sullivan @jsullivan165]

The future looks bright for these senior sunrisers! Shout out to all our seniors, senior class advisors, and our amazing HGPTA. #WeAreChappaqua @ski626 @RonGamma @cvmauricio5 @KFloresChapp

[Chappaqua Central School District @chappaqua_csd]

Has anyone seen 1,100 students? Asking for a friend…
🔎 Clues:
1️⃣ No snacks, no chatter—cafeteria’s empty
2️⃣ Halls & classrooms = ghost town
3️⃣ Auditorium? All silence, no drama
The Quaker wants to know—where is everyone?
#WeAreChappaqua #MascotMonday @jsullivan165 @Lauren_Olmo