Say I believed the earth is flat, and provided 'well documented science' that the earth is flat

That's not equivalent since there is no such thing.

Who's to say that I shouldn't be doing that?

Every person who doesn't subscribe to your fringe hypothesis. So roughly 8.1 billion people.

Or what if in social studies class I provided proof that men were superior to women?

Again, you don't seem at all familiar with how scientific proof works.

The law is clearly in the moral wrong in our current situation

Also: factually and in every other way.

in general it provides more protections than it does harm

Nope. It's states trying to remove every mention of LGBTQ+ people and racial equality, not rogue teachers.

The problem isn't with Tennessee vs Scopes. The problem is with the Republican agenda.

Is there some governing body that is accepted as the source of truth on what constitutes “abundantly” peer reviewed proof? No? Then it’s still subjective.

The fun part of living in a society with low public education standards is that this argument can work for anything from creationism to holocaust denial. Doesn't matter if the Earth is a sphere, only matters if the schoolboard has the collective IQ to understand the abundant proof that the Earth is round. If they don't- then the shape of the Earth is just 'subjective' ;)

That’s a fun idea you have

Could you possibly be any more condescending?

but you’re wrong

I objectively am not, according to the best way of arriving at truth without opinion or faith.

Who decides what the scientific consensus is?

Who do you fucking think? You can't possibly be this ignorant of how science works and what a consensus is and expect to be taken seriously when discussing science.

Is there some governing body that is accepted as the source of truth on what constitutes “abundantly” peer reviewed proof?

No, that's nowhere near what a scientific consensus is. Since you apparently ARE that clueless, allow me to inform you:

Scientific consensus is the generally held judgment, position, and opinion of the majority or the supermajority of scientists in a particular field of study at any particular time

In this case, "evolution is how life works" being the almost universally held position of anyone with expert knowledge about biology that isn't paid by pseudoscientific and usually religious organizations to pretend otherwise.

Then it’s still subjective.

Nope. That's not what that word means. A scientific consensus is the most objective thing there is in human knowledge.

Since you seem to have trouble with the meaning of key words, let me clarify: objective and subjective are antonyms. Antonyms are words with opposite meaning.