Also the more detail you can get from the tester the better picture you have of your child. On a few subtests on the Wisc and WJ we were told ds got the easy ones, missed a few mid level and then got most or all of the hardest ones. He scored gifted but just barely and I'm not really sure what this means as far as educational needs (actually we don't have all the scores back yet). But in general I'd say this fits for ds, he'll be excited about a task, dig in, flounder a bit if he gets bored, or makes a mistake. If something is harder he enjoys spending time on it...he probably needs more exposure to harder/fun math just for himself, outside of school.