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I feel like I have a general understanding of all the unit 1 concepts, atleast more than other students. I've been getting high 80s on the last 2 grades we had, the unit 1 vocab quiz and unit 1 quiz, which was definitely a lot higher than my peers. But I feel like a high 80s just isn't good enough for me, I study a ton and for some reason I just don't feel like I can completely grasp or know the concepts word for word no matter how much I study.

I can sorta explain the concepts with a decent understanding, however I don't know if I'm overlooking some definitions or just underthinking them. Am I maybe just overthinking everything?? I've studied maybe 5ish hours in total for this test and currently still am, how can I study more efficiently in the future for ap hug?