This actually comes down to State's Rights. It is not the Job of the Federal Government. If you read the First Amendment to the Constitution, it addresses religion.
The Congress makes the law for the Federal Government, therefore the Federal Government shall make no law respecting an establishment of religion or prohibit the free exercise thereof. That means the Fed needs to butt out. However, it does not say the States Assemblies are under the same restrictions as Congress and the Fed.
Separation of Church and State are words, not even in the Constitution. That was a lawyer word scam, like the Inflation Reduction Act that caused inflation. It is commercial lawyer jingle that has allowed Federal Government overreach, under the guise of pretending to be Constitutional using a word scam that misdirects away from the clear wording in the Constitution.
The Tenth Amendment says;
Congress shall make no law, pro or con, concerning religion, and since Congress makes all the Federal laws, the Fed is also powerless when it comes to religion. However, there is nothing in that Amendment about state assemblies who make state laws, unable to makes laws about religion or the free exercise thereof. This is still a state option, like abortion, marijuana, gambling, etc. Liberal States can ban the Bible in schools but Conservative State can go the other way. We can then run two parallel tests to see what happens instead of a one size fits all, illegal approach using crooked Federal Governor overreach.