[Kevin]

2 fraternities on my campus had similar problems. The two chapters in question both had great alum support. So instead of pulling their charters, their HQ's expelled all of the active members whether they participated or not... Essentially because if you didn't report it you're just as guilty because how could you not know this was going on?

They initiated the pledge classes and these fraternities are back on the rise. It would have to be pretty extreme circumstances to pull a charter though.