i doubt that, maybe 1 in 8 or 10. if your getting that from health class, most of the time their honest, but when ut comes to statistics about sex and that, they make an ocean out of the mediteranian sea. aka, they exagerate a little to get their point accross.
No, it was from a medical book. Of course, you have to factor in all the people who are unaware they have one as well.