I have one of those kids that won't show what they know. DS2.5 acts as probably your average 1.5-year old ... the way he speaks (as in ... he really doesn't) ... the way he acts (he'll wash his hands in a cup and drink from a puddle!) ... and do all sorts of goofy things ... yet, what he is NOT showing to the stranger's eye is that he could do upper and lower case alphabet including phonics before he turned 2, he could recognize numbers count to 20 and do countdown from 10-0 before he turned 2, he learned colors and shapes in a matter of 10 minutes right after he turned 2 ... two months ago he started reading words phonetically ... and I could go on and on ... yet he has zero interest in showing any of this to anyone. Only on rare occasions he decides to be a show off and starts doing some of this. But other than that he likes to play dumb. ... oh, and his latest thing ... I saw him drawing letters couple days ago, yet he won't use utensils (not even try) and eats everything with his hands! I can't wait till the time comes and I'll be trying to explain to someone that he's very likely gifted! ... oh, and he has a great sense of humor ... you can read in his eyes a lot of times he's just testing everything and everyone.

so, good luck and I hope you get through to the teacher! ... this coming from a parent of a child whose IQ will probably be somewhere in the 140-150 range but if he was tested I doubt it would show a number higher than IQ of a dog! lol ... not trying to put down my son ... just being real! smile