JACKSONVILLE, Fla. -- A first-grade teacher at Biltmore Elementary School accused of sexually assaulting a teenage girl two years ago was found not guilty of the charges.

A jury on Tuesday acquitted Glenard Chapman on two counts of lewd and lascivious battery.

Chapman was arrested in January 2006 after a 15-year-old student at Ribault High School told police Chapman gave her a ride home from an after-school flag-football game, but instead took her to his house, gave her something to eat, then raped her.

The girl said she trusted Chapman because he had coached her flag-football team. She told investigators that she did not resist because Chapman weighed 340 pounds.

Prosecutor Alan Mazahi said he believes in his heart that the teenage girl was assaulted, but the jury said was swayed by the fact that there was no physical evidence showing that Chapman assaulted the girl.

"I think the jury's problem was, unfortunately, the CSI effect," Mazahi said. "They see television programs and over and over again showing DNA and medical evidence exists in all these cases, and it really doesn't."

Mazahi told said no physical evidence existed because the alleged victim had taken a shower and did not report the attack until the next day.

The public defender in the case told Channel 4's Jim Piggott that Chapman did not want to talk about the acquittal, he just wanted to get on with his life.

Chapman had taught at Biltmore for two years and was a substitute teacher in Duval County for two years prior to that.

Chapman remains on unpaid administrative leave from his teaching job, pending an assessment of his status by the Duval County schools.

The State Attorney's Office said the fact they did not get a conviction in this case should not scare victims from reporting crimes.

"I think it’s very important that people know they should not be afraid to report crimes," "Don't look at this verdict as a reason not to report something that happened," Mazahi said.