It is generally agreed that the younger the child, the less time the child should be expected to devote to homework. A general rule of thumb is that children do 10 minutes of homework for each grade level. Therefore, first graders should be expected to do about 10 minutes of homework, second graders 20 minutes, third graders 30 minutes, and so on. If your child is spending more than 10 minutes per grade level on work at night, then you may want to talk with your child's teacher about adjusting the workload.