One idea is to use Saxon Math's own placement test with your child and share the results:
Go to -
http://saxonhomeschool.hmhco.com/HA/correlations/pdf/p/primaryplacement.pdfhttp://saxonhomeschool.hmhco.com/HA/correlations/pdf/s/SHS_PLT_middlegrades.pdfA more subtle way to do this is to give the tests and figure out which placement you think would be best. Then create your own handmade work sheet that involves a lot of problems at the level you child is at. Perhaps make the writing larger if your child's eyesight is 'age appropriate.'
Let your child fill out your parallel worksheet. Don't mention that you've been on Saxon's website or even seen their tests. This avoids the appearance that you have been prepping specifically for this test. It's natural to the school when they see a child with advanced abilities to jump to the conclusion that you've been chaining the child to the bedpost and social services need to be called. I wonder if it's projection?
Another possible idea is to figure out what your child doesn't know, and ask the school to have a teacher sit down with the child and show them how to do it, so that they get the experience of seeing how fast and easily he learns.
I love aculady's links and yes, they match my experience. Our school had a list of 50 words on the report card such as 'next to' 'underneath' that a child was supposed to learn by June after Kindy. My son knew them all at the first try. I had no idea mine was 'more than usual gifted-program gifted' until testing in 2nd grade, and he didn't multiply or recognize a single word (besides 'exit' and 'quit' - Remember CD rom games?) It is harder to tell in 2E families.
One caution I would share is to watch 'how' a child is doing Math and Division. My son was very hesitant about rote memorization of Math Facts. So he could handle Math conceptually pretty much by age 5, probably up to pre-Algebra, but it was all by 'counting on fingers' method. This was quite slow, and he was quite unwilling when we started to insist that he try other ways.
I even taught him 'the forgiving method' of Division in an attempt to get him to practice this Multiplication facts - which did help, but then he had to go back years later and learn regular methods for Division. He had tricked the placement tests because placement tests only have a few items of each type, and he saved time on the test questions that could be quickly solved by logic.
I don't really know what the answer, but just wanted to report our experience. Lots and lots of elementary Math is about memorization, not abstract thought, which plays to the weakness of an ADD/PG kid. If I were running a school, I would teach Math and Memorization in 2 separate subjects, because they are both important. Of course I would teach reading/writing/spelling/grammar independently as well. They are all important, but I hate the idea of holding kids back to their lowest skill.
But if your son is already fluent in Math Facts, or you can make them fun and learn them in the check out line, you'll save a lot of confusion, yes?
Smiles,
Grinity