It might be she prefers to do her homework straight after school. Or she might find it easier to do after her tea. Find the time that suits her best and when she is able to concentrate fully. How much homework should your child be doing? Primary school Years 1 and 2 - 60 minutes a week. Years 3 and 4 - 90 minutes a week. Years 5 and 6 - 30 minutes a day. Secondary school Years 7 and 8 - 45 to.