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Committed to Excellence

HS imageWelcome to Islip High School

2508 Union Blvd.
Islip, NY 11751

School Hours: 7:20 a.m. – 1:58 p.m.


Parents/Students Click here for Tech Support

Instructions for Students to Access the BYOD WiFi Network


Telephone Directory
All Offices: (631) 650-8300
Main Office: (631) 650-8301
Fax: (631) 650-8308
Principal’s Office: (631) 650-8305
Assistant Principal's Office:  (631) 650-8315
Dean of Student Support Services Office: (631) 650-8320
Guidance Office: (631) 650-8350
Health Office: (631) 650-8325
Attendance Office: (631) 650-8310
Athletic Director: (631) 650-8370
Drug and Alcohol Counselor: (631) 650-8328
Security (Daytime: (631) 650-8420
Security (Nighttime): (631) 665-7111



PARENTS: When reporting a positive COVID case for a student, you must call the hotline and also submit this form: STUDENT COVID REPORTING FORM



Mr. Jon LaRochester, Principal
Islip High School


Home of the Buccaneers

A Message from the Principal:

Islip High School Community,

As we open the doors of the high school for the start of the 2021-2022 school year, we do so with great pride and excitement as we welcome all of our students back. Our faculty, staff, and administration have worked diligently since the end of last school year to ensure that this year will be a full, exciting, healthy, and safe year for all members of the Islip High School Community.

This school year also carries with it a very special label and welcomes a very special group of young men and women to the high school. The 2021-2022 school year will mark the 100-year anniversary for Islip High School. When construction was completed, the first high school opened its doors in the fall of 1921, under the motto, "Enter to Learn... Go Forth to Serve," a motto that has become the foundation for so much of what we try to provide our students. As the start of the 100th school year begins, we also welcome the Class of 2025. This special group of students also carries a label, as they will be the 100th graduation class in Islip High School's storied history.

Join me as we set our attention to the wonderful opportunities that we create for our students this year, to a safe and healthy return to normal, and to our "Re-Connecting & Re-Engaging with Kindness, Caring, and Innovation."

Let's have a great school year, Islip!


Jon LaRochester - Principal




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