✔ 最佳答案
When I read the first part of your question I thought "well maybe she's bored..." because lots of smarter kids get bored in an average classroom and end up acting out as a result. But making herself vomit and biting herself are both extremely unusual behaviors for a six-year-old....sort of self destructive in nature. If I were you I would see a child psychologist pronto. The only times I have heard of that type of behavior (extremely depressive, etc) suddenly starting in a child who was previously well behaved, it turned out to be because of the sexual abuse of a babysitter.
I certainly hope that that is not the case for your daughter, but if I were you I would get her in to see a therapist asap. I'm an art teacher and I've seen kids act out for a variety of reasons... bored because they aren't challenged enough, upset over the divorce of their parents, feeling neglected because both parents work and don't invest time in their child... Kids don't know how to tell us what's wrong, so they act out to try to get our attention. But I've never seen a student of mine act out to the degree you're talking about. Someone who's trained in this stuff who can sit down and talk with your little girl will be able to help you way more than anyone on yahoo. But given the fact that her behavior is so extreme, I would say it should be your #1 priority to get her to see a therapist outside of school SOON. Even if your insurance doesn't cover it, this should be a priority.
Usually schools and family doctors can both make referrals to good psychologists. Since you haven't had much luck with the school you might want to try asking a doctor, or even ask around among your friends. Best of luck to you!