Plainfield South High School Alumni
Plainfield, Illinois (IL)
Home Of The Cougars!
Plainfield South High School Alumni, Class Reunions, Yearbooks, Cougars Classmates, and more!
Welcome! Register as an alumni from Plainfield South High School and reunite with old friends and classmates. Share your memories by posting photos or stories, or find out about your next class reunion!

Recent Members
Brooke Anderson | 2021 |
Donatas Gudonis | 2006 |
Mackenzie Whitmire Mackenzie Whitmire | 2023 |
Miriam River Rodriguez | 2022 |
Niko Lullo | 2013 |
Robert Hesser | 2013 |
Umme Kazmi | 2023 |
Yesi Flores | 2018 |
Military Alumni
Honoring Our Heroes
This area is dedicated to our alumni that have served or are serving in our armed forces!
Plainfield South High School Class Reunions
FREE CLASS REUNION WEBSITES!
Post your Plainfield South High School class reunion information here and receive a free reunion planning website with the reunion tools you need for the perfect class reunion.
Alumni Stories

Read and submit stories about our classmates from Plainfield South High School, post achievements and news about our alumni, and post photos of our fellow Cougars.
School News
Plainfield High School Hockey Alumni Game
Plainfield High School Hockey will be hosting our 2nd annual Alumni Game. Being held at International Ice Centre/ Romeov...
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