About 10 unpaid hours during school each week throughout the year. (No breaktimes free, no lunchtimes free, 1x hour after school clubs every day except Friday. ) Lots more hours during coursework marking. (holidays usually). So spread out over the academic year = Approx 50 hours /week + ..... 37.5 paid However most evenings I switch off totally and apart from one week I do absolutely *** all during the Summer hols. Music teacher. ps. the four letter word that the TES censor asterixed out was actually bug**r. they make me appear significantly more potty mouthed that I actually intended to be..... remarkable!