Is there a prom in high school every year or just senior?

Question

I’m homeschooled so I have no idea how schools work..

Answer

The way it was at my school was that only juniors and seniors could buy tickets, but they could invite freshmen and sophomores as a date.

Answer

Usually Juniors and seniors

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At my school it’s juniors and seniors but the seniors pick waiters in the sophomore class that hands out food and drinks at prom. Prom can be fun and all but it’s really overrated. After prom is fun😉

Answer

At my school there was just a senior prom

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Lol is prom even a thing (I go to a private school I have no idea) also do we have this in Australia??