A person, minor or adult, does not just dive into the pool; He must qualify for baptism. Later on, after being a JW for a while, the WT will not accept a person's change of heart because the person claims and now believes that he jumped into it or was a minor at the time. Children can get expelled from school for not obeying the rules and minors can go to jail too. If a person decides that he no longer wants to be a JW, he can leave, but in the JW community that it is a sad and disgraceful thing. If anyone young or old thinks that he can un-JW himself without any consequences, he has to be kidding. AKA un-ring the bell or annul a marriage after 6 pregnancies,or be a virgin again after intercourse.