My DD has an October birthday. The school wouldn't give out a class register list so at the time I didn't know all the names of all the kids in her class. There was a limit at the venue she chose if 25 kids to attend in total so I just invited a handful of kids she asked to invite from the class and some family friends.
Since then the class have gelled and parents have shared a class list between us.
I now feel guilty as my DD is being invited to parties of children we didn't invite. I always RSVP yes and send DD. I feel bad as we didn't 'return the invite'. I plan to invite them along to DD next party next year.
But I would also feel bad not sending her as you see those kids on Facebook where no one turns up.
I'm over thinking this aren't I? But what's the polite thing to do!?