I don't see how funding education is a bad thing, and I don't believe the Gates Foundation is intent on controlling things. It's not like they get any equity for their donations.

I'll be honest, I had to look up what it even means to be a charter school, since they don't exist in Canada (except for Alberta apparently). I'm not sure I agree with their weird public/private position for accountability, but I certainly don't equate donating money to them as wanting control and privatization. Charter schools are also funded by tax dollars anyway.