Chelsea Athletic Boosters 

http://www.chelseabulldogs.net/

Chelsea School District

https://www.chelsea.k12.mi.us

Chelsea Music Boosters

chelseamusicboosters.org

Alumni Arbor Club

arborclub@chelsea.k12.mi.us

Facebook: CHS Alumni Arbor

Chelsea Area Historical Society

https://www.chelseahistory.org

Facebook: Chelsea Area Historical Society

Chelsea Community Foundation

 http://chelseafoundation.org

Remembering Former Alumni

https://www.facebook.com/profile.php?id=100069232541345

Adult Learners Institute

https://alimichigan.org