The usual platitudes were exchanged: he is so small, youngest in class, can't give 3rd grade maths as he will get bored in 3rd grade, we prefer to go wider instead of deeper (I asked why they have to be mutually exclusive).
Arrrrgh! Don't fall for it! There is no shortage of math to learn. If he's done with third grade math in Kindergarten, then he can do what comes next, and next, and next. If they're afraid that the third-grade teacher won't know high enough math when he gets there, they need to figure out that there is math online. There is ALEKS, there is Khan Academy, there are all those other things mentioned around here. He will not learn all the known math in the universe before third grade, or before sixth grade, and if he does, that will be the least of their problems.
