The child is in the father's account, can he study in the mother's school district?

Because the father has custody, the mother has no custody and can't go to her school district. Continue to study and go to school under my father's account.

If the child's household registration is on the father's side, it is not allowed to go directly to the school district under the mother's name. Both parents are still guardians, and both parents have custody rights, but only one of them is directly raised. You can negotiate to transfer the child's account to the mother.