^ The plan's scores are done differently than the ACT's ^
My plan test was a pretty accurate forecast. It guesstimated that I'd get between a 28-32 on the ACT. I got a 30 the first two times, then I got a 33. So, it's an accurate forecast, however, it's not set in stone.
The Explore test is an entirely different matter. If we were to forecast my ACT score from the explore test, I should have got a 22-26ish.