Dylan Klebold

Dylan Bennet Klebold was born in Lakewood, Colorado, to Thomas Klebold and Susan (Yassenoff) Klebold. His parents attended a Lutheran church with their children, and Dylan and his older brother Byron attended confirmation classes in accordance with Lutheran tradition. At home, the family also observed some rituals in keeping with Klebold's maternal grandfather's Jewish heritage. Susan's grandfather, Leo Yassenoff, was an influential builder and philanthropist. Thomas Klebold was raised by a brother 18 years his senior, after his parents had died while he was young.

Thomas Klebold was a geophysicist turned realtor and ran a small real estate business from home, while Susan Klebold worked for the State of Colorado, administering training programs for the disabled. Klebold attended Normandy Elementary School during first and second grade, then attended Governor's Ranch Elementary School where he was part of the CHIPS (Challenging High Intellectual Potential Students) program. He met and befriended Brooks Brown around this period, but he would not meet Harris until junior high school.