Based on how this is worded, of course he has the Constitutional right to insist X be taught just as someone on the opposite side has the Constitutional right to insist that Y be taught. Everyone has a right to petition redresses to the government. His insistence, however, doesn't mean he gets his way, just like someone on the opposite side insisting something doesn't mean they get their way. He is just one voice and just like everyone else, he can request his view through the representative process, in this case school boards and other representative bodies that determine textbooks and curriculum.
What a laugh. If the school board approves the teaching of ID or Creation alongside evolution, in marches the communist ACLU, the NCSE, the MSM, and the rest of the evo-fascist attack machine.