Currently our educational systems seem to be effectively teaching a great deal of Gaia worship green bullshit so, in my opinion, teaching religion is already happening. My solution would be to get rid of the classroom since nobody can use it without pushing their own agenda.
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Your solution is... since you can't teach religion in school... get rid of schools?!?
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Um...since you can't
help but teach religion in school...
Like I say, a focus on the 'Three R's would be of value. The first R is 'reading'...
It's easy to avoid teaching religion in school... simply, don't teach anything that is not true... easy
You teach whatever the fuck you are told to teach under the common core system or you are unemployed, and a variety of metrics are collected to enforce that. If 'science' says the earth is going to die unless we pay carbon taxes to the U.N., that's what you teach. If 'science' says that
people purple penguins are often born into the wrong sex and can choose their gender and get their junk hacked off if they don't feel comfortable with it, that's what you teach.
BTW, you keep somehow converting my 'classroom' to your 'school'. As I said, I don't in principle have anything against collective support of basic education, and I've never complained about the fairly significant amount of taxes I pay to make it happen.