"into which the students get in"? This is extremely redundant. Either the "in" needs to be removed, or the "into" needs to be removed and the "in" changed to "into". The former ("into which the students get") sounds really, really unnatural, so I'd stick with the latter ("which the students get into")

The and those - those are the only enemies in this module :P

ARE GETTING INTO

But "into which the students get in" does not seem right to me...

Why not accept "are getting into"?

Lol. My suggested translation is "into which the students get in" but there is no "in" in the word bank.

And why even in/into? I thought buses need onto like in English?
Azoknál a buszoknál állnak a sofőrök, amelyekbe beszállnak a diákok.
Azoknál a buszoknál állnak a sofőrök, amelyekre felszállnak a diákok.???

"Into which the students are getting" was really very much wrong?