average high school/college girls dressed pretty much like their mothers- youth having its own fashion *really* didn’t become a thing until the 60s. Cowboy boots were popular-ish, but probably not the sort of thing you didn’t wear to school. If you want some good research, take a look at high school and college year books from the era. Ask if your grandma has pictures!
What was the average high school/college student wearing in the 50's? Also were people wearing boots in the early 50's at all? What did greaser girls wear?