School Dances!!!

OK, so ther is this thing call Favorites at my school. Its like having these catergories. Ex: best smiles, most popular 9,10,11,12th grader gitl/boy and more others. I myslef never been to a highschool dance(i see no need)
But my friend invited me and is going to pay for my ticket. and now i am kinda freaked out cuz i don't know what to expect.
Can anyone with a nice enough heart tell me a little bit about school dances.
(Sorry for nopt knowing any better about my own school)

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