So far, the new science guidelines have largely escaped criticism from skeptics of climate science.
Rachel Slobodien, a spokeswoman for The Heritage Foundation, a conservative think tank based in Washington, D.C. that has worked to discredit the scientific consensus on climate change, said the group hasn't looked at the new science standards closely enough to comment on them.
But McCaffrey believes conservative groups will eventually get involved.
"The standards have been under the radar, and deliberately so," he said. But "evolution and climate change are politically and ideologically controversial, even if they aren't scientifically controversial ... It is almost inevitable that they will get some pushback."