September 2023

District

Sep 4 Mon
- No School: Labor Day
  - District
Sep 13 Wed
- School Improvement Day (SIP)
  - District

http://cos.sd103.com

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