About Us                                                                                    


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

Image result for diocese of rockville center office of bishop
Please take a moment to read this Easter Letter from our Bishop, Most Reverend John O. Barres

Bishop Barres' Letter for Easter
Related image

Kids Day

Check out our awesome student reporters featured in Newsday this week!
Great job Rose, Brady, Michaela and Aidan! 

Click Here to Read the Full Article!

Faith in the Public Square


Join us as we enjoy another addition to our “Faith in the Public Square” and the Diocesan Edge Project.
The words the students used are taken from Bishop Barres’ letter on the Reproductive Health Care Act to highlight the necessary respect for life in all forms.

Image result for youtube icon
Dio Video 5

Thanks to the principals and students from St. John the Baptist DHS and Holy Trinity DHS, who gave of their time to tape this very important message. Special thanks to the Video Production team at SJBDHS for the excellent job they did putting it all together.



Click here to download the registration form

Celebrate Earth Day with an Eco Carnival
 right here in Islip!


Click here to download the PDF


Quick Links                                                                               

          News & Events       


Image result for bible

St Mary Parish will host TWO WEEKS of Vacation Bible School this summer!! ‚Äč

VBS is open to all children who have completed a 4-year-old program! Students going into 7th grade and above are volunteers at camp.

Week 1: 9 AM – 3 PM July 8th through July 12th Week 2: 9 AM – 3 PM July 15th through July 19th Each week is a SEPARATE program

Tuition for Campers is $150 per week Register before 5/31 to receive a $50 discount per camper per week

Packets are available Rectory, White House & on the VBS page of the parish website

For more information, call Jess Otto in the Parish Baptism Ministry Office or email

Tomorrow's Hope Foundation Application is now available online!
Click Here to Read More
Click Here for the Application


St. Joseph’s Parish in Garden City 5K & Fun Run
Help support Tomorrow's Hope, our diocesan scholarship foundation, at this fund raiser!
This event helps to build the scholarship fund that we all draw upon to help our families in need.   

2019 5K & Fun Run flyer



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