| Plainfield St. Mary St. Mary Immaculate School 15629 South Rt. 59 Plainfield, IL 60544 smischool.org |
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| Phone | (815) 436-3953 |
| Fax | (815) 439-8045 |
| Superintendent | Dr. Michael Boyle |
| Principal | Mrs. Jennifer Errthum |
| Athletic Director | Mrs. Kate Lesters |
| IESA Contact | Mrs. Kate Lesters, AD |
| smiathletics@smip.org | |
| MAP | |
| Activity Participation | |
| School Records | |
| Conference | Tri-County Catholic Conference |
| Nickname | Spartans |
| Colors | Red & White |
| 7th-8th Grade Enrollment | 73 |
| Grades | 5-8 |
| County | Will |
| Board Division | D |
Co-op Guest with these hosts: |
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| Boys Baseball -8th: Joliet St. Paul thru 2024-2025 -7th: Joliet St. Paul thru 2024-2025 |
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