@honeysun
Hmm, I don't think it's making them out as evil...just...normal. They've got a solid social reason to not like a morally ignorant, socially ignorant, but otherwise nice girl. Girls are quite often like that, and being more communal creatures, especially have trouble with odd ducks. Autistic girls in particular suffer because they "can't read the room" and other girls basically shut them out because who wants a detective freak who can't even speak with you properly? Guys on the other hand are all a little obsessive about something, and more tolerant of individuals nkt being "socially appropriate" (let alone it leads to sex!)
As you can tell, though, being a very singular person, the class president is less off put by individual absurdity.