I m covering a maternity leave Have just been told there is a probation period to new job. Had. no idea this was a thing as I'm not an NQT. HOD is totally overbearing. Has tidied up my classroom . Has also arranged for colleagues to come into my lessons to 'help me'. Had my doubts about the school from the start . Kids are noisy and some are very rude. Have worked in tough schools before but feel like confidence is being drained. What would you do?