Here's the best major publication report based entirely on the Grand JuryReport and setting the timeline of the matter of the acts of Jerry Sandusky which culminated in arraignment on 40 criminal counts 5 days ago! I read the Jury report as well. There are at least 3-4 others who are culpable in the perpetuation of these acts over several years. We'll see how they fare.
Those "3-4 others" refers only to those Penn State administrators mentioned in the Grand Jury Report.
As to any others who may have "looked the other way" or worse in instances related to other victims of his from "The Second Mile" program Sandusky started not part of the Grand Jury investigation, it's all speculation but it wouldn't surprise me.
It appears clear from the record that to say Joe Paterno "looked the other way" in this matter is inappropriate. One of the Penn State administrators he called to his home the next day, Sunday after his Grad student reported the event in question (victim 2 of 8) to discuss the incident "of a sexual nature" had The Campus Police Department under his authority.
As always, see the references linked to via highlighted text above for more detailed information on the subject.