If they say that thing about the test scores being a year old again, I would simply pretend ignorance of the actual meaning and say, in all innocence, "Oh, yes, she's learned so much more since last year!" Thus implying that the test scores would only be better if they were from now -- which is almost certainly the case, but not what they have in mind.
And take everything you possibly can, just in case you need it. It's much easier to leave lots of stuff in the folder than it is to show them something you left at home.
I can't imagine that they would be telling you she can't go into first grade if they already let her go to kindergarten -- does that seem like a possibility? What would they expect her to do for a year in between those? (Ask about internet college courses to throw them off balance.)
