And how did he fail????
You really should pose that question to the victims and the victims parents and guardians. Paterno was among the powerful and authoritative who failed to keep a serial child molester off of the PSU campus
http://prospect.org/article/no-touchdown-paterno-biography
Paterno's key failure was not in 1998. Sandusky, after all, had been cleared by the authorities. Paterno's knowledge of the 1998 investigation was relevant not because Paterno could have stopped him at that point but because it should have made the urgency of contacting the authorities in 2001 even more compelling.