March 2026

District

Mar 4 Wed
- School Improvement Day
  District
Mar 27 Fri
- Early Dismissal
  District
Mar 30 Mon
- Spring Break
  District
Mar 31 Tue
- Spring Break
  District

http://cos.sd103.com

Costello Elementary School
4632 South Clyde Ave., Lyons, IL 60534
Phone: (708) 783-4300 | Fax: (708) 783-4605