I found that the Profanity level is almost outrageous.
Unfortunately, profanity is present in not only most movies nowadays but even many TV programs. As a military retiree, I've heard it all at one time or another but even I get sick of watching movies where about every third word starts with "F".
The wife and I kept five grandkids during their spring break last week. I have an extensive film library so it was no problem keeping them entertained. One of the 12-year-old grandsons wanted to watch the movie "Stop-Loss", which contains profaniity of the worst kind but which, IMO, is a very good movie. After talking it over with the wife, I told him he could watch it, since I'm sure he's heard every cuss word there is in school anyway.
Unless kids are home schooled, you can almost bet money they've heard plenty of dirty language.