[teacher problems]

Being a Headmistress of the school you have enormous powers to enforce the rule and regulations agaisnt the defaulting teacher.

You issue a warning letter with a copy endorsed to the top mnagement.

If she refuses to accept the warning letter, you can send that copy also to the top management and seek their advise to initiate further action.

You can inform that you have initiated all the actions necessary as per rules, whereas she is not amending herself nor she is cooperating  therefore you may leave the decision on further course of action to be taken to the management and let them pass instrutions on further action, you can follow it stating that you are taking action as per rules and instructions of the management.

You will be safe on one side and the other side you can also take legal action in this pretext.

You simply can post the warnings on the notice board and keep record of that, you have to make a disciplinary committee to enquire about the conduct of the teacher and thereafter you must issue a Notice by passing  the resolution warning her last chance to mend her ways. If she continues like that the disciplinary committee should call the employee and reading the allegations to her she has to be be given chance to prove the allegations as wrong.        Her appraisals should be commented adversely each time and finally she can be give notice of termination. That is legal way to dismiss a teacher on the grounds of misconduct.