Another Paterno son, Jay, told CNN's "Erin Burnett OutFront" that sworn testimony ate- the Schultz and Curley trials will provide information that will help give the whole picture.

Jay Paterno also said people should realize there is much more information available on Sandusky's acts today than there was in 2001.

Freeh's team discovered accusations of Sandusky's abuse well over a decade ago, which school officials were allegedly aware of.

Even before the 1998 investigation, "Several staff members and football coaches regularly observed Sandusky showering with young boys," and none of those interviewed ever notified their superiors, the report found.

A year later, in 1999, Paterno, Spanier, Schultz and Curley decided to allow Sandusky to retire, "not as a suspected child predator, but as a valued member of the Penn State football legacy," the report says. That allowed him to continue to work with children at the university, "essentially granting him license to bring boys to campus facilities for 'grooming' as targets for his assaults."

He retained unlimited access to university facilities until November 2011, the report says. The school also approved a one-time lump sum payment of $168,000 to Sandusky in 1999. Top university officials said they had never known Penn State "to provide this type of payment to a retiring employee."

The desire to avoid bad publicity was part of administrators' rationale in the cover-up, investigators said Thursday.

"No one, no one, is above scrutiny," said Frazier when the review began in November 2011.

In June, eight young men testified, often in disturbingly graphic detail, of how Sandusky forced them to engage in sexual acts in various places, including hotel rooms, the basement of his home and in the Penn State coaches' locker room.

In court documents, prosecutors say they have e-mails from university officials -- which CNN obtained exclusively -- that allegedly contradict grand jury testimony of Curley and Schultz. The Freeh review discovered the documents and turned them over to state prosecutors as part of ongoing investigations, according to both the university and prosecutors.

One of the e-mails suggests Paterno had a previously undisclosed conversation with Curley about the shower room incident from 2001.

Freeh's team of investigators said evidence shows Paterno was also made aware of a criminal investigation of Sandusky relating to suspected sexual misconduct with a boy years earlier.

But Paterno "failed to take any action," the report found.

"At the very least, Mr. Paterno could have alerted the entire football staff, in order to prevent Sandusky from bringing another child into the Lasch Building," where the incident took place.

Paterno and the others also failed to alert the board of trustees, Freeh said.

"None of them even spoke to Sandusky about his conduct. In short, nothing was done and Sandusky was allowed to continue with impunity."

Then, in February 2001, the four men decided they would report the incident to the Department of Public Welfare; but Paterno had a conversation with Curley, and the men then agreed not to do so, Freeh wrote.

"After giving it more thought and talking it over with Joe yesterday, I am uncomfortable with what we agreed were the next steps," Curley wrote the next day, according to Freeh's report.

Instead of alerting authorities, Curley apparently wrote that he would prefer meeting with Sandusky, telling him they knew about another incident in 1998 and offering him professional help. He then suggested notifying Sandusky's Second Mile charity organization "at some point" if Sandusky is cooperative, and "maybe" child welfare officials.

Paterno never reported the shower incident to police. "To his credit, Mr. Paterno stated on November 9, 2011, 'With the benefit of hindsight, I wish I had done more.' " Freeh added.

"We determined that his decision to do his minimum legal duty and not to do more to follow-up constituted a failure of leadership by Coach Paterno," the board of trustees said in a report that explained his firing.

That decision prompted rioting by Penn State students, who overturned a news van and clashed with police, who used tear gas to break up throngs of angry protesters.

Video: Coach K on Joe Paternoc

Wick Sollers, a lawyer for the Paterno family, said the former head coach "followed university procedures and promptly and fully informed his superiors."

Spanier, the ousted president, has consistently maintained that he was never informed of any incident involving Sandusky that described sexual abuse or criminality.