I bet if he were a female teacher who did the same with a male student, he would serve only 1/4 time than he’s going to serve now.
It depends how hot the female teacher is, though, right?
That's because it *is* different. And I don't have a problem that it is. Girls and boys are different. A 16 year old boy seduced by some hot 25 year old teacher just isn't the same as this turd pressuring a girl for sex in order to change a grade. Abusing power and exploiting hotness are not even in the same league. :-)
But I would also caution that this might be a setup on ~the girl's~ part. Granted he was dumb enough to fall for it, but it sounds possible that she had an axe to grind with him already and set him up to get even. Or not.