Curley and Schultz pleaded guilty to a misdemeanor charge of endangering the welfare of children one week before they were set to go to trial on three felony charges.
Multiple legal proceedings have demonstrated that some members of the Penn State community had not just a moral but also a legal duty to inform authorities about their knowledge regarding Sandusky's illegal activities.
Spanier was given four to 12 months - two to be served in jail, the rest under house arrest.
Former Penn State President Graham Spanier, center, arrives for his sentencing hearing at the Dauphin County Courthouse in Harrisburg, Pa., Friday, June 2, 2017.
Three former Pennsylvania State University officials were sentenced to jail on Friday for covering up ex-coach Jerry Sandusky's sexual predations and effectively letting him victimize more boys.
The judge hit Curley the hardest, imposing a 7- to 23-month jail term, with the last four months of it to be on house arrest.
"Spanier was the ultimate decision-maker when it came to reporting Sandusky", prosecutors wrote, adding that "nothing short of a sentence that includes a period of jail time" would be appropriate.
They all apologized in the courtroom to Sanduskys victims before the sentences were hand down.
Spanier said he regretted that "I did not intervene more forcefully".
Said Schultz: "It really sickens me to think I might have played a part in children being hurt".
In 2001, a graduate assistant named Mike McQueary saw Sandusky abusing a boy and reported what he observed to head coach Joe Paterno, Schultz and Curley.
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Prosecutors say the men hushed up an allegation about Sandusky sexually abusing a boy in a football team shower in 2001 to protect the university's reputation.
Sandusky was not arrested until 2011, after an anonymous tip led prosecutors to investigate.
Sandusky is serving a 30-to-60-year prison sentence after being found guilty of 45 counts of sexual abuse in 2012.
The university has paid almost $250 million in settlements, legal bills, fines, public relations and other costs stemming from the scandal. More than 100 of Paternos victories were briefly erased from the record books.
Both the judge and prosecutors Friday thrust blame onto Paterno himself.
The sentencing ends the last criminal case in the Sandusky scandal, which broke in 2011 and led to the firing of Paterno.
He also criticized Paterno for not calling authorities, as well as McQueary and his father and a neighbor who counseled McQueary. "Why he didn't is beyond me", Boccabella said. "Why he didn't is beyond me".
Spanier and Schultz each received two months in prison, while Curley will spend three months behind bars. Schulte said, referring to the ex-athletic director.
Prosecutors said they had agreed not to recommend sentences for Curley and Schultz. But he also chided them for what he said was an inexcusable failure.
They reserved their harshest words for Spanier.
She said he kept Penn State trustees in the dark about the Sandusky complaint and "he allowed children to be harmed". "I sincerely apologize to the victims and to all who were impacted because of my mistake", Curley told the court.
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