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    


  • Wix Facebook page
  • Twitter Classic
  • Instagram Social Icon

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

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.

COVID19 Information

Based on directives from Illinois Governor  Pritzker and Bishop Richard E. Pates,  St. Mary Immaculate Parish School will be closed beginning Monday, March 16 until further notice.  


While there are no known/identified cases of Coronavirus (COVID-19) in our school or parish community, it is our hope that this preventative measure will help to slow the spread of the virus.  

Voted 2017 Best Pre-School

in Will County

Voted again for a 2nd year in a row!

We are blessed once again to be chosen for our PreSchool

in 2019

© 2019 St. Mary Immaculate Parish School

  • w-facebook
  • Twitter Clean
  • White Instagram Icon