Homework for young children is not necessary and does little to add to their learning IMO, it's just another tick-box exercise for teachers. They don't like setting it or marking it, and rather than letting children relax at home after doing their best all day, you become the 'bad-guy' by having to make them do it. Homework at this age is not learning, it is at best repeating what they already know. My daughter's infant school didn't set homework but rather used to send home suggestions which they could decide to do over half term holiday e.g. go for an Autumn walk, collect leaves to make a picture, try something new, make a cake, read something funny, and so it went on. We marked off the list the things we had enjoyed doing, and felt good about all the new experiences we had shared........ I am a Primary (and Secondary) teacher, believe me Homework is unnecessary, and not a legal requirement. If it is causing stress and the child is over-tired, just tell the teacher, it's one less thing for them to mark!