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Seneca Middle School

850 Main Street
Holbrook, NY 11741
Principal: Gemma M. Salvia
Assistant Principal: Heather Stumpf
Assistant Principal: Georgia Afxendiou
Phone: (631) 471-1850


Be Kind. Be Honest. Be Humble. Be your Best.  

6th Grade Orientation Dates:
August 30th-
A-K 9am-10am
                               L-Z 10:30am-11:30am

August 31st-MAKEUP DAY 9am only

 Schedules for students in grades 7 and 8 will be posted in eschool on Friday, August 26 after 3:00pm.  No changes to the schedules will be made unless there is a class missing from the schedule.

First day of school – Tuesday, September 6

New Bell Schedule - Please Note: School begins at 7:50am and ends at 2:40pm

The after school bus will begin on Wednesday, September 7. There are no after school busses on Tuesday, September 6. Students should check their bus number on the portal so they know which bus to take to and from school.

Seneca Clubs 2022-2023 - View the list of clubs for this school year

September Club Meeting Dates

Student Handbook 2022-2023 - View the student handbook

School Pictures See Flyer for Details - September 8th and 9th

View the Daily Announcements

Join the 2022-2023 Seneca MS PTA via the Membership Form

Students who Make a Difference - September 2022

Students who make a difference - September 2022



Students of the Month

May 2022

Grade 6-Aaron D. 

Grade 7-Jack K.

Grade 8- Chelsey C.

and their nominating teachers


Students Who Make A Difference 



Club Information

National Junior Honor Society Requirement Process

National Junior Honor Society Activities Form

Seneca PTA Fundraiser

 Student Handbook 

Important Phone Numbers and Information

Seneca's Newspaper is here!


NJHS Extra Curricula Activity Form



Just a reminder, students will not be released to anyone if the person is not listed on the emergency card.
If changes need to be made on the card, please send in a revised one in to the main office. Thank you!



Mission Statement

The Seneca Middle School community will foster the intellectual, emotional, and physical growth of every child
by developing a positive self-image, a strong desire for learning, and a sense of respect for self and others.
We will accomplish this by providing a challenging curriculum in a safe and supportive atmosphere,
as our children mature into productive citizens.




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Follow us on Instagram @ seneca_ms


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