what makes teachers want to have sex with students?

Well many girls (including me) wore our skirts shorter than we should have. And older men are generally attracted to young women.

Prolly the dead short tight skirts I used to wear at school lol

Temptation.

Definitely the short skirts my wife wore to Psychology class when she found out the professor loved her legs.

They are horny, and young students are sexy

Hormones + bad decisions

Why the other way round too?

They're drunk by ten in the morning?

Horniness, and not getting enough attention from their husband .

especially the hot female teachers