FWIW, one of my homeschooling friends said that her own documentation was not accepted for much when she tried to move her kids back to traditional school. She said that she had her kids take the talent search tests (i.e. Explore, ACT, SAT depending upon age) every year so that she could track progress. According to her, the school was willing to look at data from those tests.
That's what I would expect as well. Extensive documentation can be a huge drain on parental time: unless there is a known, specific need for it, I wouldn't bother.
