...give me the names of the children in his immediate group (i.e. not the whole class) and then ask her to distribute invitations to his birthday party?
It feels so cheeky - I know how busy she is and how hard she works. DS can't reliable give me all their names and would probably just draw on the invites.
I can't do it because I only very rarely do drop off/pick up (childminder does it because I am at work...)