Some women (and men, of course) are just hard-wired that way, and it can be hard to overcome that hard-wiring I guess.
In 5th grade, we had a teacher, Ms Freydenland(?) who was about 25 years old and dressed like a complete and total whore for her classes. Boobs without bra hanging out of low-cut Angora sweaters. Makeup like a Kabuki mask, and this was the very early 80s so what would today be considered excessive make-up was normal. She was excessive for the era, thicker then Tammy-Faye Bakker caked on, perfume enough to give you a headache. And this was for a bunch of 11 year old kids. Boys, rather. The girls hated her. Us boys, who were just starting to discover that our peckers were for more then just letting piss through, worshipped her. Absolutely she knew it, and absolutely she got off on it.
In hindsight it's completely fucked up, what kind of person puts themselves on parade like that for just barely sexually awakening kids? But at the time, each and every one of us would have died to catch a glimpse of her naked, even just a full boob. We went through the day with raging hardons. I doubt we learned a damn thing all year except what 'cocktease' means, every time she leaned over our desks to talk to us, cleavage in our noses. That said, I don't think any of us regret it, then or now. Guys are wired a little differently.
Male teachers/professors taking sexual advantage of young students should be castrated. That's an absolute abuse of a position of trust and authority. Female teachers having sexual relations with very willing teenage boys however, really much less of a problem. I don't think any one of the guys who have been in that position have regretted it except perhaps for publicity when the older woman is busted. I don't think too many guys have felt anything but 'lucky bastard, why didn't that happen to ME in high school???' about the guys in question.
I wonder what happened to Ms. F? Surely she couldn't have gotten away with that forever, even in the much less aware early 80s.