About Us                                                                                    

Welcome to St. Mary School!

St. Mary School was founded in 1914 by the School Sisters of Notre Dame.  For over one hundred years, the “charism” of that religious community, which is “unity, and educating in all we do and world vision” continues to permeate who we are. 

Hopefully, you will take a few minutes to visit with us online and discover the great opportunities afforded to our students.  We pride ourselves on educating the whole child with a special emphasis on his or her religious formation in the Catholic faith.

You are always welcome to come and see our wonderful school and consider joining our great school family!

Take a look at the St. Mary School History!

St. Mary School 100 Years in Pictures
St. Mary School History

Congratulations to the St. Mary Students who participated in the Diocesan Honor Band on Saturday, March 4th at St. Anthony’s High School!  The below link is an article that was written about the concert for the Long Island Catholic.  Congratulations again to all students involved!

Click here for article.

Fidelis Care is a Catholic-owned healthcare program supported by the US Conference of Catholic Bishops.  Fidelis has been very supportive of our Catholic schools and communities.  If you would like more information on their healthcare program, please click here. 

News & Events                                                                        

Stained Glass 

On Wednesday, April 12th, the Living Stations will be held in the auditorium at 9:45AM.  This day is also an early dismissal day @ 12PM.


In addition to re-registering for the 2017-2018 academic year, please enroll with your home district to ensure textbook information and transportation will be secured for your child for the upcoming school year.  It is very important to check with your home district in order to obtain the correct information. 

Click here for School and Policy Information


Catholic Schools Week

Take a look at the St. Mary events during Catholic Schools Week!
Click here to be redirected to the CSW website! 

This is the image for the news article titled Amazon Smile
arrowsAmazon Smile
We are now on Amazon Smile. Go to and search for St. Mary Church & School in East Islip. 0.5% of the purchase will support St. Mary
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UPCOMING EVENTS                  

Local Weather                       

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New York State Senate passes the bill.  
For more information click here for the article