Hi,
You've gotten really good advice already. But just for your information, a charter school in NC (which is a public school with Federal funding) is accountable to all state and federal laws. The DPI (
http://www.dpi.state.nc.us/) is your first source for state laws and procedures, and each charter school in the state has an assigned DPI consultant. That being said, if my son was unsafe and was being traumatized by adults at a school, I would leave that school if at all possible. Maybe you're in a situation where it's not possible... but if you can keep him home at least until the situation is resolved, perhaps you could consider doing that.
