Ok, I think this depends on the school. I have worked with some students that attended UF, Nova, and PBA and this is what I have gathered:
UF: Business professional (if this makes sense?) they have to wear their lab coats to class and one of the students told me their teacher makes them stand up to answer questions and if your lab coat is longer than your skirt for instance, you will be asked to leave class.
Nova- Business professional or scrubs. =)
PBA-Since PBA is a Christian school, they must wear professional clothes that cover themselves (no bellies or underwear showing...)
Like I said, this is just what I have heard from students that attend these schools.