Ah, Trebek, we meet again....
Here's the issue, so far as I see it-- The young lady is choosing to adopt a hairstyle in violation of the school's policy. The school is accommodating the young lady's choice. Period! Freedom, it's a great thing! The young lady is learning a valuable lesson (i.e., actions have consequences).
She has plenty of options: homeschool, transfer to another school district, get a GED, private school, charter school. The list of options is great.
What I dislike is the belief by many on this thread that this girl is a victim.
When my daughter didn't like the rules at her school (e.g., they wouldn't let her pierce her friends' ears on the playground) she pulled out for a year and took classes at a local junior college. She went back her senior year and graduated with the rest of her class.
The point is, this young lady has an opportunity to take control of her life. If she wants an education badly enough she'll get one. If she doesn't want one badly enough she'll continue to blame others for preventing her from getting one....