Studetis is a verb. It is second conjugation (principle parts are studeo, studere, studui). Here it is in the 2nd person plural (present active indicative).
Thanks for answering. Since it is a plural conjugation would Where do you all study ? be correct.
Yes, I think that is a good translations to really point out that it is about multiple people.
I think there was mention somewhere that they were allowing "you all" with 2nd person plural. If it isn't just report it then I suppose.