St. Mary Immaculate Parish School

St. Mary Immaculate Parish School Welcome to the Official Page of St. Mary Immaculate Catholic School in Plainfield, IL. For over 60 years, St. WE ARE SMI!

Mary Immaculate Parish School has strived 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.

📚✨ The 2026–2027 school year is officially underway! Welcome back, Spartans—we’re excited for another wonderful year fil...
08/17/2026

📚✨ The 2026–2027 school year is officially underway! Welcome back, Spartans—we’re excited for another wonderful year filled with faith, learning, friendship, and unforgettable memories. 💙

Help us celebrate by sharing your Sacred Start and first-day photos for a chance to be included in our Back-to-School collage!

https://bit.ly/SacredStartFirstDay2627

08/16/2026

The gates to Auradon are officially open… 🏰🍎

SMI Drama Club proudly presents Disney’s Descendants: The Musical! Get ready for a little mischief, a lot of magic, and one unforgettable adventure! 💜💙

We know… new school year paperwork is a LOT! But before those Forms & Fees get buried in the “I’ll do it later” pile, ta...
08/10/2026

We know… new school year paperwork is a LOT! But before those Forms & Fees get buried in the “I’ll do it later” pile, take a quick peek 👀

There’s important info, forms, and requirements from teachers that need to be completed before the first day of school—and reading now = a smoother, stress-free start!

Missed Forms & Fees? No worries! Contact the School Office to schedule an appointment.

Because school is almost here—and we can’t wait to see you! 🎉

Who's ready to hit the links? ⛳ The countdown to the Annual SMI Golf Outing is on!🏌️ Friday, September 25👥 Gather your f...
07/27/2026

Who's ready to hit the links? ⛳ The countdown to the Annual SMI Golf Outing is on!

🏌️ Friday, September 25
👥 Gather your foursome
✅ Register today: www.smigolf.org

We'll see you on the course!

Last week, we were thrilled to welcome some of our Class of 2022 alumni back to St. Mary Immaculate! As they celebrated ...
06/01/2026

Last week, we were thrilled to welcome some of our Class of 2022 alumni back to St. Mary Immaculate! As they celebrated their recent high school graduation, we proudly recognized all they have accomplished and were honored to celebrate this important milestone with them. Their SMI family has been cheering them on every step of the way, and we look forward to seeing where God leads them next. Congratulations, graduates—we loved having you back home! 🎉✨

05/30/2026

Last week, our Spartans took to the field for one of the most anticipated days of the year—Olympic Day! From friendly competition and team spirit to countless smiles and memories made, it was a day filled with everything that makes SMI so special.

As always, the day ended with one of our favorite traditions: the 8th Grade Last Lap. Watching the Class of 2026 take their final run around the track as SMI students was a moment filled with pride, celebration, and just a few tears.

Congratulations to our graduates, and thank you for giving us one more Olympic Day memory to cherish. 🏅💙

🚨 LAST CALL FOR YEARBOOKS! 🚨The memories have been made... now make sure you don't miss them! 📚 From field trips and spi...
05/29/2026

🚨 LAST CALL FOR YEARBOOKS! 🚨

The memories have been made... now make sure you don't miss them! 📚 From field trips and spirit days to classroom moments, athletics, performances, and everything in between, the 2025-2026 Yearbook is packed with memories you'll want to keep forever.

Don't be the one borrowing a friend's copy next year to see what you missed! 😉 Secure your yearbook before orders close.

ORDER YOURS HERE: bit.ly/SMIYearbook26

05/27/2026

From hallways filled with memories to brand new chapters ahead… 🎓

Our 8th graders are officially heading off to their next adventure, and we couldn’t be more proud of each and every one of them. The future is so bright, and we can’t wait to see all the amazing things they accomplish in the years ahead.

No matter where they go next, they’ll always be part of the SMI family. 💙



Joliet Catholic Academy
Providence Catholic High School - Charlie Celtic
Benet Academy
St. Francis HS College Prep
Plainfield Community Consolidated School District 202
Yorkville High School
Lincoln-Way West Warriors
Minooka Community High School District #111

Address

15629 S. Route 59
Plainfield, IL
60544

Opening Hours

Monday 8am - 4pm
Tuesday 8am - 4pm
Wednesday 8am - 4pm
Thursday 8am - 3:30pm
Friday 8am - 4pm

Telephone

+18154363953

Website

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