 If you liked
Oresama Teacher
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 ...then you might like
Houou Gakuen MiSORA-gumi
|
Both the comedy in the mangas are somewhat the same so it always makes me laugh, but HGS is more romantic. The art they do is similar as well. I recommend you check out either of these mangas, if you like one of them you're sure to like the other.
I'll give you a warning for HGS though, there are parts where it seems that the protagonist's mom is against homosexuality if you think that's annoying, don't bother reading it. However, this is not a big part of the manga so I'd recommend you to overlook that fact. :)