6 of the top 10 are Madison Metro; 4 of the bottom 10 are Madison Metro. What can you say about that? Who knows. There's almost a 15% difference in the number of students scoring advanced from the #1 to the #10 school though. That's pretty high.
The other thing I find interesting is the fact that the Core Knowledge charter school doesn't outperform the "regular" high performing MMSD middle schools. It is getting better though - in the 2008 data, the Core Knowledge kids were at 55%; now they're way up at 70.4%. Of course you have to be in a lottery to get into the Core Knowledge school (plus you have to live in Verona - not my suburban dream but to each his own). You can just move to one of the high performing attendance areas in the MMSD to get in there.
It's interesting to point out that Sherman is also moving up a bit. 37.8% is nothing to shout about but better than the 25% of 2008.