Texas and Louisiana have introduced education standards that require educators to teach climate change denial as a valid scientific position. South Dakota and Utah passed resolutions denying climate change. Tennessee and Oklahoma also have introduced legislation to give climate change skeptics a place in the classroom.

In May, a school board in Los Alamitos, Calif., passed a measure, later rescinded, identifying climate science as a controversial topic that required special instructional oversight.

“Any time we have a meeting of 100 teachers, if you ask whether they’re running into pushback on teaching climate change, 50 will raise their hands,” said Frank Niepold, climate education coordinator for the National Oceanic and Atmospheric Administration, who meets with hundreds of teachers annually. “We ask questions about how sizable it is, and they tell us it is [sizable] and pretty persistent, from many places: your administration, parents, students, even your own family.”