Crystal Lake South High School Alumni
Crystal Lake, Illinois (IL)
Derek Duffy
Crystal Lake South High School
Class of 1990
→ Join 2647 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.
DEREK'S PROFILE
| First Name | Derek |
| Last Name | Duffy |
| Graduation Year | Class of 1990 |
| Gender | Male |
| City | N/A |
| State/Province | FL |
| Country | United States |
| Occupation | Substation Electrician |
| Married | Yes |
| Favorite School Memory | There are so many... but the one that stands out the most is meeting the love of my life Kelly O' Brien |
| About Me | Moved to Florida in 1992, married Kelly O'Brien in 1995. We had our son in 2002 who I cherish everyday. |
Class of 1990 Alumni
→ Reunite with 49 class of 1990 alumni that have joined.
Wendy Hammond
Class of 1992
Julie Collins
Class of 1992
Danielle Axelson
Class of 1983
Bernie Kraft
Class of 1990
John Roberts
Class of 1991
Andrea Farrell
Class of 1997
Dave Caulkins
Class of 1989
Melanie Field
Class of 2000
Jason Smith
Class of 2001
Kristine Mrazek
Class of 1994
Jackie Folak
Class of 2007
Franklin Mcanally
Class of 2005
Monty Cordell
Class of 1980
Nancy Lothian
Class of 1959
Tim Eiden
Class of 1994
Rebecca Fitzgerald
Class of 1999
Bethany Duvall
Class of 2009
Mindy Van Fosson
Class of 1994
Ruth Tollefsen
Class of 1986
Todd Sonoga
Class of 1985
Lisa Finnell
Class of 1996
Matt Trummel
Class of 1996
Amy Rothenbach
Class of 1997
Jamie Brown
Class of 2002
