There is absolutely no doubt the Dover School Board was trying to impose a sectarian religious biology curriculum. This was abundantly clear in court testimony; it's not in the least nebulous. The Bill of Rights exists to protect us from governmental overreaching, and a school board is just as capable of overreaching as the US Government is. And, whether you like it or not, the federal courts are the body ordained by the Constitution to enforce the Bill of Rights.
:-} Right Professor, whatever you say, you after all are the Professor.