In most instances, banks cash checks for minors if their parent holds an account with the bank, providing the parent prints the child's name on the top endorsement line, and the account holder signs the second line. Some banks require printing the account number under the signature, according to BankingQuestions.
Banks differ in their regulations for accepting this type of check. A local branch with a teller who knows the child sometimes just requires the child to sign the check. Some banks have policies that do not allow them to cash checks for minors. BankingQuestions indicates other banks may require the parent to deposit the check into an account instead of cashing it.