Why would you think that you have a claim against the principal? Someone has to make the judgment about employee performance and that someone, at least in this instance, is the principal.
If you are represented by a union, you may have rights to challenge the principal's assessment of your performance and the decision for administrative action. Or you may have such rights as a consequence of civil service protection. But if you are, as I suspect, an at will employee, you are subject to transfer or even termination for any reason that is not prohibited by law. Prohibited reasons would include bias against you for reasons such as race, religion, etc., but not for disapproval of your job performance or conduct.
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