And from what mountain top did you bring down this edict?
What are you going to do if a teacher wants to pray? Thrown him or her in jail? And what if they do it again? More time in jail?
There was never any intent to drive religion out of government by our founders. Church services were held every Sunday in the House of Representatives until after the Civil War. Jefferson attended many times. Jefferson also signed a bill giving land to Christian missionaries so they could more easily convert Native Americans to the Christian faith.
Separation of church and state was written into first amendment law by anti-Catholic bigot Hugo Black in 1947. When Black was head of membership for the largest KKK cell in the South, made new recruits swear to Separation before they were admitted to the Klan.
The Supreme Court in the last four years has not endorsed Separation , whether holding for religious groups or against them. The SCOTUS has dropped the Separation metaphor. They have not yet replaced it with anything. So we had Separation from about 1947-98, not before and not since.
Most people who don't follow the Supreme Court don't know that Separation is probably no longer the law of the land.
That you think "no particular religion should be endorsed implicitly or explicitly " in public school is meaningless. You want to censor religious speech, do it honestly. Start a movement to repeal the first amendment.
Sometime in the 1880's the last township in Massachusettes resisted the imposition of government schooling---at gunpoint.
But I realize these were the backwards days when people were not concerned overmuch with pledging allegiance to a flag.