I will study hard until I've gotten a high score on this exam.
Wtf does this sentence mean ? It's not in future perfect and it seems like present perfect although I'm not sure (becuase why to use this tense in this sentence it doesn't make sense ).
Why not to use future perfect - I will have studied hard until I get a high score on this exam or just the present/future simple (like a fact ) - I will study hard until I get a high score on this exam .
Could you guys break down the sentece so I can understand it?.. thanks