regarding exposure, I do know that our tester said that I should expose him to more of those things before taking the TOMAGS. Not necessarily teach, but just provide more exposure so he can have the knowledge base to figure those things out (things such as fractions and decimals, etc). I still haven't done it, other than getting a couple math workbooks that he looks at from time to time. He somehow got the concept of fractions and all that and decimals so maybe I have been exposing him a bit, who knows. Or its his math websites he likes to go on. Who knows. I do think exposure would certainly help scores for a test like that. I think for us we aren't going to have him take it privately. We will wait to see what the school says. He is clearly several grades ahead in Math and maybe they can do some test through the school instead so we don't have to pay for it.
Here's info from the publishers I got off of Hoagies, but I am sure you have seen this already. Maybe it will help to give you more info.
http://www.prufrock.com/productdetails.cfm?PC=84
