At my old high school, probably, but they're in the closest. I've seen two guys on Grindr that graduated a year before me, and I'm sure there's more to come.
I'm not gay but, there are lots of lesbians and a couple of gay guys at my school shockingly. I only say that because it's Texas so I had preconceived notions about everything, so it was shocking but amazing to see at the same time.