I'm trying to be careful not to judge the grad asst. and the janitor who witnessed Sandusky too harshly. Yes, they should have done something. But whistle-blowers are not always taken seriously. That is why someone in authority (i.e. Paterno) should have used his authority to make sure that something was done. If Curley and Schultz didn't act, Paterno should have followed up with the police. But he didn't. At the very least, a disappointment that he didn't do the right thing. But I'm afraid that it will come out that his inaction was motivated by a deeper involvement in a cover up.
I can't judge the Graduate Assitant, or the mother if Victim 1, but the rest deserve what they get.
The GA was a student, not an employee. He probably was not required to report, though even if he was, the requirement was to report to his supervisor - that would be Paterno. Consider the position we know he was in, as well as the position he might have been in. We know he witnessed Sandusky - and that Sandusky and the victim saw him. There was the 1999 case, so it is possible that he had already hear rumors about him, and what he witnessed confirmed them. Given what we've seen of the students supporting Paterno, can you honestly say his career wouldn't have been over before it even started, if he had gone over Paterno's head?
He was a Graduate Assistant. If he went over Paterno's head, he would lose what little link he had to the football program, and may have risked his education. I know, that doesn't mean much to the victims, but he probably thought any action would be in vain - Sandusky and Paterno were powerful men. There had already been allegation in 1998, and those only resulted in forcing his retirement. In his shoes, would you really expect a new case 4 years later to result in a different outcome?
As for the mother, she was a single mother, needing a male role model for her son. This was a father figure taking an interest in her son. His involvement started through an organization set up for that purpose - to provide a role model for at-risk boys. She trusted those who introduced her son to Sandusky. If the schools vouched for him, the university vouched for him, he was a respected and trusted powerful member of the community. Why would she not trust him with her son? He had similar standing to the priests in Boston and elsewhere.
I also wonder about Sandusky's wife - so many mentions of him attending events with these boys, and her being absent. While she might not be interested in the events, I would think after the 1998 allegations that she might want to keep a closer watch on his activities. Where does she fit in all this? I can't imagine she knew nothing of what was going on, yet she too was a victim of a different sort, in denial all these years.