Not when it violates the Constitution. If establishing sectarian religious doctrine, like I.D., with no basis in science as the favored theory of the school district does not violate the establishment clause, nothing does.
The 1st Amendment is not about purging the sectarian ideas from the public sphere, from public institutions or from the public schools. The REVERSE is true - if it intends to secure free exercise of religions EVEN if it contradicts the doctrine of established Church of England or the correct scientific doctrine.
Free exercise is not free when it is restricted to the privacy of homes or religious buildings, while treated in the schools where the your minds are being formed as insidious plague.
For the free exercise of religion it does not matter whether this free exercise is restricted by the Archbishop of Canterbury or by the scientific authorities. The result is the same, and possible more severe in the second case, as scientific secular mindset appears to be more exclusive, intolerant, aggressive and better funded (by mandatory taxation paid by the believers too) .
I would say, if some county in Alabama wants to have Creationism be taught in schools it will not lead to the decline of America. America grew and prospered when the religion was present in schools. The spiritual vacuum created by secularism will be filled with "non religious" beliefs like sexual diversity, political correctness, feminism etc ... And in the end Islam might come.