i would support a ban on charter schools, and also on vouchers. in ontario, i support the abolition of the catholic school system and the cessation of all further public funding to faith-based institutions. i would also support writing the curriculum in such a way that would essentially force private religious schools to offer religious classes as a voluntary after-school program; i would outright ban religion in private schools if it were possible and likely to be constructive, but it isn't likely to be constructive and probably isn't possible so the next best thing is to crowd it out by loading the curriculum up with so many other things that there is no longer room for religion as a separate class.
there should be one public elementary and high school system for everybody with common standards and testing, regardless of race, class, gender or anything else.