Here we see the consequences of social promotion; no, not the practice of advancing students who haven't demonstrated competency in their subject matter, but of inappropriately advancing a concept that hasn't attained scientific credibility.
When said concept, in this case Intelligent Design, is shown to be scientifically vacuous, we send it back to the drawing board. We don't push it along into textbooks and classrooms.
"All of us are smarter than one of us," Hamm said.
In the case of a schoolboard filled with creationists, clearly this does not hold.