Question: are you wanting casual dates, or one night stands? Or both or either? There's a pretty big difference between them though!

Try plenty of fish - it's got a bit where you select what you're looking for - long term, casual, that sort of stuff. There are tons of people just looking for hook ups, especially on tinder and plenty of fish (try them all really, if for no other reason than to figure out which one your local area seems to use the most).

Every one night stand I've had has been with men about the same age as me - a few years older if not the same age. Then again, I only go along with things if I know someone who knows them (I've never gone out looking for a hookup but I've just gone with the flow sometimes). When out I will turn down men who I think are younger than me (I've asked a few times too).

The teacher thing: teaching is a predominantly female industry, so of course there will be more documented occurances with women. Percentage wise it's probably quite different. Either way, it's rape - teachers are in a position of power over their students so it is always considered rape. Which isn't what you are looking for at all.

30 year old men would be more likely to have hook ups - they're more likely to have stuff like money, as well as experience. And, a lucky bit for guys - men are often considered to age well and look better as they get older, while women tend to be considered less attractive every year (am going off of celebrity/movie star information I read about how the actors and actresses get treated differently in the media as they age).

Regardless, wanting some casual whether is just relaxed dates or sex, there is nothing wrong with that. The only thing that would be wrong would be if you were to lead someone on.