Do the certifications mean anything in particular? Beyond perhaps the primary grades, I would settle for mastery of the subject matter and an ability to manage the classroom.

Yep. And that's why charter schools, school vouchers, and private schools are the manifestations of desire for those wishing to destroy and defund public secular education.

If the "public secular education" you're paying for is functionally worthless, and the ppl. running it are fine with that, perhaps destroying it and doing something else with the money is an attractive option?

Government funding education != Government managing education

Nonsense. Charter schools are secular public schools.