cammom - that sounds AMAZING that your school tests out of level! I am not familiar with those tests, but what nice progress!
aeh - perhaps having DD taking the EXPLORE again at some point in the future might be helpful? When taken out-of-level, though, I had read that it is more of a measure of aptitude than achievement (trying to remember where I read this...)? So my question becomes: how well does it measure achievement growth - especially when given to "good" test takers? Won't we face the same "good guessing" possibility/phenomenon?
Has anyone tried repeated EXPLORE/ACT/SAT testing and found it to be helpful for achievement tracking? I would love to hear the experiences of those who have tried it. Did you think any of these tests was a good measure of academic progress?
Measuring on my own sounds interesting, but I am not in the field of education by trade. I am not sure my "assessment" would be valid.

I am also trying to simply understand the "inflation" theory - I assume here they are implying that DD was simply too good of a guesser?