I am LPN in Mississippi. I graduated from a program in La. In school my natural hair was and is dyed blonde and it was a problem for my teacher to the point where I had to file suit against the school for discrimination. From being told I would not be allowed at clinical with my blonde hair. There were no rules on AA having blonde hair. And she was also AA.
I now reside in Mississippi, I have witness DNP,RN, APRN with hair color, styles that were natural and unnatural colors(reds,Burgundy, etc).
Here, no one cares about your hair color or style,as long as its clean,doesn't interfere with your work. And that isn't just nursing homes, its hospitals and all.
So I guess unfortunately, from MY OWN personal experience, its where you live and work.
20 years ago, when my mom became a RN, braids were considered to "ethnic" at the hospital she worked at in North La where we are from. Now, its perfectly fine.
Rock your fro, Mine was TWA then,now its a real fro, and I love it. Also, crochets styles are in and a very good protective, quick and inexpensive styles to maintain.
Best of luck in school!