Welcome to Islip High School
2508 Union Blvd.
Islip, NY 11751
School Hours: 7:20 a.m. – 1:58 p.m.

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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
TO REPORT A POSITIVE COVID CASE AFTER HOURS, CALL: 631-650-8280
Mr. Jon LaRochester, Principal
Islip High School

Home of the Buccaneers
A Message from the Principal:
Islip High School Community,
We have finally completed the development and review of the Spring Semester Cohort Calendar beginning on Monday, January 4, 2021, which you will find linked in the sidebar of this page. This calendar reflects the complete schedule for the Gold and Purple Cohorts while identifying the Day 1/Day 2 Schedule. The calendar also reflects holidays, scheduled snow days, and our June testing period, which is still to be determined. As decisions regarding NYS Regents Examinations are made by the NYS Education Department, we will update our June testing to reflect these changes.
Thank you and please feel free to call my office or the IHS Guidance Department at the numbers listed above if you have any questions.
Sincerely,
Jon LaRochester - Principal