From the last paragraph of Page 79
"...Curley agreed that there was no 'practical way to enforce [Sandusky] not bringing children onto the campus after he was warned not to do so. There is no indication that Spanier, Schultz, Paterno, or Curley had discussions about any other enforceable actions that could have been taken to safeguard children. Spanier told the Special Investigative Counsel that he did not do anything to prohibit Sandusky from using Penn State facilities, nor did he instruct anyone else to do so".
Basically, the whole crew said "Naughty, naughty, Jerry. Mustn't do that again", but did nothing to enforce it.