I believe they fought against it because they knew if they had to have stringent accountability measures, vouchers would have collapsed like a house of cards and to be honest why would we expect any less. Teachers at private schools don’t have to be certified let alone have degrees and their curriculums don’t have to be recognized.
You should be asking yourself why is accountability only for public schools, not for private schools that take public money? Mattus says, oh but they take a test. Well if he is so confident, if it is basically the same thing, then why doesn’t he insist they take the same test? This seems like a small price to pay to help so many more students.