Crystal Lake South High School Alumni
Crystal Lake, Illinois (IL)
Derek Duffy
Crystal Lake South High School
Class of 1990
→ Join 2655 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.
Brandy Christenson
Class of 1984
Steve Towne
Class of 1982
Mike Smith
Class of 1979
Marci Thomas
Class of 1997
Jeff Frank
Class of 2007
Joanne Knapp
Class of 1996
Bryce Tucker
Class of 2006
Bill Baruth
Class of 1983
Michael Elder
Class of 1983
Brian Maguire
Class of 1997
Beckie Maronde
Class of 1982
Jason Roos
Class of 1994
Debbie Moty
Class of 1981
Colette Melhuish
Class of 1995
Mary Jane Lyons
Class of 1943
Steve Daughaday
Class of 1989
Kristin Meyer
Class of 1994
Tom Reter
Class of 1988
