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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.  

  Unity Fair October 15 Click for Information

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


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

October Club Meeting Dates

Student Handbook 2022-2023 - View the student handbook


   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

September 2022



Grade 6 Danielle C. 

Grade 7 Sean Z. 

Grade 8 – Anna P.




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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