Spanier testified to a grand jury that he was unaware of the 1998 investigation while Curley and Schultz testified that McQueary reported only that Sandusky and the boy were engaged in naked, inappropriate horseplay that made him uncomfortable. Once the defendants became aware of an investigation into Sandusky in 2010 or 2011, they did nothing to stop it, obstruct it or hide evidence, their lawyers said.
The three were charged with perjury, obstruction, endangering the welfare of children, failure to properly report suspected abuse and conspiracy. Those charges include allegations of hiding evidence from investigators and lying to the grand jury.
Penn State and the Paterno family declined to comment.
Curley and Schultz were initially charged in November 2011, when Sandusky was arrested, and accused of perjury and failure to properly report the incident.
Spanier was forced out as president at that time. A year later, he was charged with covering up a complaint about Sandusky while additional charges were filed against Curley and Schultz. Spanier remains a faculty member on administrative leave.
Paterno was fired and died in January 2012.