Liberals don't believe that. I certainly don't. Why shouldn't a parent be required to demonstrate college level proficiency in, for example, high school chemistry, before they get authorization to teach high school chemistry?
Why? Because they do
not receive a salary from the tax paying population. They owe you
nothing (despite your bizarre belief that they somehow owe you some evidence that they are "qualified" by your standards).
It's so odd how you want people who volunteer their time to be required to display "proficiencies", be subject to "evaluations", and need "authorization", as people who receive a grossly over inflated salary, cadillac healthcare plans, executive-level pensions, and a host of other perks and benefits simply because you can't craft an intelligent argument for your disdain of homeschooling and you're not willing to be honest about it.
The truth is, you're outraged at the idea of less children to indoctrinate. Why can't you just say it?