How to say i think you're cute in japanese?

"I think you're cute" could be "かわいいね" (kawaii ne) informally and a bit vaguely (there's no "you").
Or "かわいいですね" (kawaii desu ne) a bit more formal but still vague (again, there's no "you")
Or "あなたはかわいいね" (anata wa kawaii ne) informal with "you" (anata)
Or "あなたはかわいいですね" (anata wa kawaii desu ne) a bit more formal with "you" (anata)

You can also use "君" (kimi) instead of "あなた" (anata). I feel like "君" (kimi) would be used if a boyfriend was telling his girlfriend she's cute, but that might be just me XD

Hope this helped!! xx

It depends on where you live.

Students and school are nouns
good luck!