Its a pathetic liberal gotcha that fails to reconcile with the power of state government.
Either the sign goes up and some evangelicals vandalize it with impunity. Or the sign never goes up because school administrators don’t think the Texas AG will punish them for ignoring the law in this instance.
In this case, it doesn’t look like the flag was ever actually displayed.
Either way, evangelicals hold all the cards. Secular Liberals only manage to performatively protest in order to feel better.