Harris entered Columbine High School in 1995 as a freshman. Columbine had just gone through a major renovation and expansion. From all accounts, he had many friends and was left forward and mid-field on the Columbine soccer team for his freshman and sophomore year. According to one of his teammates, Josh Swanson, he said Harris was a "solid" soccer player, who enjoyed the sport a lot. Harris, during his freshman year, met Tiffany Typher, who was in his German class. Typher later recounted that Harris quickly wooed her. Harris asked her to homecoming and she accepted. After the event, it appeared that Typher was no longer interested in seeing Harris anymore, for reasons never disclosed. When Typher refused to socialize with Harris again, Harris staged a fake suicide, sprawling on the ground with fake blood splashed all over him. When Typher saw him she began to scream for help, at which point Harris and his friends began laughing, prompting Typher to storm off, shouting at Harris to get psychological help.