I'm in my second year of teaching and I get to school about 7:45am, work through half my lunch break and leave about 6pm (including 3 afterschool clubs a week and meetings). At home I will occasionally have marking to do, which is about 3 hours, and will sometimes work at weekends for 2-3 hours doing planning or resources if necessary. Do bear in mind, though, that different schools can demand different amounts of "extra" work. For example, my school is not doing APP and we aren't required to hand in minutely detailed plans in advance. Also, during training and NQT the workload is considerably more, as you collect evidence towards the standards, plan every lesson in detail (although not all NQTs are required to do this by their school) and evaluate all you do. I have known students/NQTs/teachers in other schools who did 7am-6pm in school, followed by another 4 hours at home, due to different demands in paperwork/marking expectations/APP etc. etc.. Be prepared for long hours!