♫ Where the wind comes sweeping down the plain

There are three issues, but primarily, they all work to move public money in to private hands.

1. He pushes standardized testing. Standardized test results generally reflect economic status and other externalities not related to actual teaching efforts. But the results are then used as leverage to expand charter school funding.
2. Charter schools push out low performing students. If you look at graduation rates, the attrition level for entering students by 12th grade is extremely high. They have good results on paper because they aggressively weed out anybody who won't or can't perform.
3. Charter's with bogus results are run by private companies, using privately developed curricula. That's where the money transfer happens. Funds that used to go to public schools that accepted and taught children of all abilities now go to private schools that are selective about admission and retention.

Gates and others have created a system designed to make public schools look bad, then transfer the money those schools need in to the hands of private corporations that won't actually help the students who are claimed to benefit from these efforts.

Here is some more in depth reading for anybody interested in learning more:

http://dianeravitch.net/category/gates-foundation-bill-gates/
http://www.dissentmagazine.org/article/got-dough-how-billionaires-rule-our-schools
http://www.publicschoolshakedown.org/funding-education-reform

I wish my school did this.