Crystal Lake South High School Alumni
Crystal Lake, Illinois (IL)
Kelly Duffy (Kelly O'brien)
Crystal Lake South High School
Class of 1990
→ Join 2646 Alumni from Crystal Lake South High School that have already claimed their alumni profiles.
→ There are 58 classes, starting with the class of 1943 all the way up to class of 2023.
KELLY'S PROFILE
| First Name | Kelly |
| Last Name | Duffy |
| Maiden Name | O'brien |
| Graduation Year | Class of 1990 |
| Gender | Female |
| City | N/A |
| State/Province | FL |
| Country | United States |
| Occupation | College Professor |
| Married | Yes |
| Favorite School Memory | Going to the senior prom with Derek |
| About Me | Moved to Florida Married my childhood sweetheart and best friend Derek Gave birth to our beautiful son Kevin in 2002 |
Class of 1990 Alumni
→ Reunite with 49 class of 1990 alumni that have joined.
Scott Lemke
Class of 1999
Jennifer Jozefowicz
Class of 1994
Chris Kolmar
Class of 2003
Adam Bichsel
Class of 1999
Katy Fitzpatrick
Class of 1997
Colette Melhuish
Class of 1995
Kristie O'brien
Class of 1988
Lindsey Barna
Class of 2002
Tracey Leahey
Class of 1987
Steve Balfour
Class of 1979
Heather Todd
Class of 1993
Jeff Lerette
Class of 1996
Jeff Gleason
Class of 1998
Ashley Domain
Class of 2012
Adryanna Tucker
Class of 2015
Heather Mccluskey
Class of 1994
Tim White
Class of 2005
Megan Barna
Class of 1998
