Aci - that's great that the teacher didn't overlook the social side of things. I actually think that matters more to get right in the early years than this whole reading/writing malarky.
So far we don't have the party issue as ds is in a small class so they just default to inviting the whole class. But I've been there with dd and it is niggling thing, especially because its tied in with, as you all say, people liking you as well.
My dear children are quite tricky atm, and I am quite at the end of my tether. ds is deffo 'testing the boundaries' atm, and its exhausting.
I am sick of parties as well, and I felt mean today when another invitation arrived and I almost wanted to not tell ds, or make some excuse up as to why we couldn't go. DH and I had a hilarious conversation the other night about wondering exactly what we did with our weekends pre children - remember that - lie ins, lunches, cinema, papers. Now its all soft play, party, swimming, uniform, blah blah blah.