Daniels did not follow their advice. Instead she says she told Probst that she would be notifying Clinton County Children and Youth Services of the allegations directly.
Daniels and Fisher later learned that Central Mountain High School officials did call CYS, but they say the call only came after the mother and son left the principal's office. School officials are legally mandated to report all allegations of child sex abuse and have said that the allegations were reported immediately.
For Fisher, the initial suggestion that those meant to protect him did not believe his story was crushing.
Clinton County CYS psychologist Michael Gillum was one of the first to handle Fisher's case.
"It was obvious to me immediately that he was upset, that something had, in fact, happened to him," Gillum told "20/20."
Gillum said he was shocked by the claim that Central Mountain's principal, Probst, had told Fisher and Daniels to go home.
When confronted outside the school by "20/20", both Probst and football coach Steve Turchetta -- who pulled Fisher out of his classes for meetings with Sandusky -- declined to answer questions. In grand jury testimony, Turchetta said that he took kids out of class for those meetings even though he developed suspicions about the relationships.
Much to Fisher's dismay, coming forward with the allegations was only the beginning of a long battle to bring Sandusky to justice. It would take years for an arrest.
"The broken promises, the numbers of state troopers," Fisher said, "and he's not even in jail."
Sandusky was interviewed by CYS but he laughed off the allegations, painting Fisher as a troubled kid, Gillum said.
Meanwhile, the police made Fisher retell his story four times over the course of three years. He was forced to go before two grand juries. Yet still, the attorney general prosecuting the case said authorities needed more victims to charge Sandusky.
To Fisher, it meant his suffering was not enough.
Fisher said every delay in the case caused him to grow increasingly desperate and drove him to contemplate suicide.
"I thought maybe it would be easier to take myself out of the equation," he said. "Let somebody else deal with it."
Finally, in 2011, there was a break in the case. Allegations surfaced from a Penn State coach, Mike McQueary, that he had witnessed Sandusky molesting a boy in a university locker room years earlier.
On Nov. 5, 2011, shortly before Fisher's 18th birthday, Jerry Sandusky was arrested following an indictment by a grand jury. In June 2012, Sandusky was tried and convicted on 45 of 48 counts. He was sentenced to 30 to 60 years in prison, a virtual life sentence for the 68-year-old man.
"I wasn't expecting it," Fisher said, "I was kind of thinking that he'd get off scot free with this."
Though the conviction was a victory, Sandusky was not the only adult who Fisher felt betrayed his trust. Fisher still has questions for the teachers and administrators at his high school.
"It's a fact that I lost a good portion of my childhood," he said. "I endured heartaches and numerous amounts of people who didn't believe me and walked away from me."