Sounds like fraud.
And while I do not doubt the fact of her being harassed I would say it probably was less to do with her skin shade and more to do with her pointing out this "possible" fraud.
While as a general rule the state looks the other way while whistling a merry tune there are times when they decide to actually do their job and investigate. If even a couple of parents had put some pressure on the system because their child is being warehoused rather then taught this becomes more likely.
In that case they would have been desperate to get rid of her.