I've just returned from maternity leave as a teacher. I work just under 2 days a week but spread over 2 mornings and one nearly full day.
I went to the dept head last week to express my concerns re: one of my classes being behind thanks to the supply teacher. She asked if I could do after school classes or lunch time classes to catch them up in addition to giving them written work in the holidays to complete to catch up themselves.
It's not that I don't want to do the extra sessions but due to childcare issues I need to return home straight after my lessons (and so work hours) have finished to collect DD. The one day I'm in school during lunch I have duty so cannot do it on this day.
The dept head has asked me to stay one lunch time I do a half day to do lunch time sessions but I need to dash home in this time to collect dd. She hasn't insisted I do this (yet) but I just wanted to check I am within my rights and being reasonable to say I cannot due to childcare or if it's something she can try to enforce leading to me to have to plan/adapt childcare.