May 2027

District

May 5 Wed
- SIP Day - Dismissal at 11:50am 8:20 AM – 11:50 AM
  District
May 28 Fri
- End of Q4
  District
- Last Day of School
  District

http://cos.sd103.com

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