This article says they aren't pursuing it but an update is that 7 seniors were disciplined. I can't find any more updates than that.
"Lake Zurich police Cmdr. David Bradstreet said the police are not involved in the investigation and the entire incident is being handled by the school district.
"It's a crude and obnoxious prank, but at the end of the day, there was no crime committed," he said."
""Really, I think it's very stupid and immature, and definitely sexist," said Marshalla, 18. "The only thing that is really funny about it is the guys who wrote it clearly have no idea what the female genitalia is actually like.""
Hope I'm not over posting but I hadn't seen this on GT or mp.