Dd is in yr 9 and has had various supply teachers since 2 weeks before Christmas hols for maths. I have now sent an email (yesterday lunch time) voicing concern as the supply teachers just hand out worksheets and do not teach. Every other class has started a new topic according to dd. Her actual teacher went abroad to get married and is now off sick apparently. How long is reasonable to expect a reply to my email before I lose the plot.