Hey, Lady J, my stepson will be in 4th grade in Sept. My question is, could he be registered with my last name? He used his mother's name in 3rd grade. Would that be possible?

You should done this on his first school here. Your stepson is already registered because you said he's been in a 3rd grade and his details held by school will gonna carry on, even he changed school in Sept , because the school will past his details to another school you prefered but I'm not sure, maybe you can amend his details but the school might get confuse and ask you the reason.

When registering your stepson's to like dentist, GP etc. try start using your last name.

have you visit the deedpoll website? I think I have told you enough about changing your stepson's last name, sorry I'm not really expert to this case, only what my hubby's experienced I can tell you.

If you are really desperate to change your stpeson's name then I think you should seek a professional advice.

Goodluck!