For over 60 years, St. Mary Immaculate Parish School strives to create a Catholic learning environment of academic excellence in which we develop in our children a deep Catholic faith emphasizing the message of Jesus and encouraging a life-long quest for knowledge, justice, and mercy. WE ARE SMI!  #SMISaysYes


15629 S. Route 59
Plainfield, IL 60544
815-436-3953 Phone
815-439-8045 Fax    


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Annual Giving

At St. Mary Immaculate, donors make dreams possible for the students and staff.

Gifts to St. Mary Immaculate School provide us with funds for the most immediate needs of our school and to provide financial assistance to families in need.

If you would like to donate to the school, contact the school office for more details. 815-436-3953  #SMISaysYes

Voted 2017 Best Pre-School

in Will County

Voted again for a 2nd year in a row!

St. Mary's is part of Amazon Smiles!

When you #StartWithaSmile, Amazon donates 0.5% of the purchase price to St. Mary Immaculate School. Bookmark the link smile.amazon.com/ch/36-2264405 and support us every time you shop.

Open House - March 22, 2020

10am - 12pm

Thinking about registering your child for SMI or know someone who is?


Come to our Open House in March for a personally guided tour and see our classrooms in action.

Registration for the 2020-2021 school year is open and spots are available.  

We are blessed once again to be chosen for our PreSchool

in 2019

© 2019 St. Mary Immaculate Parish School

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