Crystal Lake South High School Alumni
Crystal Lake, Illinois (IL)
Derek Duffy
Crystal Lake South High School
Class of 1990
→ Join 2653 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.
Terry Grossmayer
Class of 1991
Julie Salerno
Class of 2002
Krista Schneider
Class of 2001
Jean Leamy
Class of 1988
Jennifer Vazzano
Class of 1998
Kathleen Brandt
Class of 1988
Darrel Jones
Class of 1984
Patrick Schmidt
Class of 1998
William Gomez
Class of 2017
Kevin Broederdorf
Class of 1996
Diana Stephens
Class of 1989
Amy Leary
Class of 1999
Joe Aleman
Class of 2000
Timothy Curtis
Class of 1983
Jim Graf
Class of 1986
Kristine Mrazek
Class of 1994
Mike Smith
Class of 1979
Cheryl Crossmock
Class of 2000
Tracey Leahey
Class of 1987
Jeffrey Sherman
Class of 1991
Suzie Nordbrock
Class of 1987
Tanja Hoffman
Class of 1988
Dick Ashford
Class of 1989
Jeff Nolin
Class of 1980
