Let's start here. In 2016, as US News reports, "The Portland Public Schools Board on Tuesday decided to ban any classroom materials that cast doubt on climate change. The resolution passed unanimously and requires that textbooks and other material purchased by the district present climate change as a fact rather than theory. Material will also need to present human activity as one of the phenomenon's causes."
This is good news. Why? Because a school system has asserted how it wants education to be managed. This is how children will be taught. No tap-dancing around the issue. Here it is. Boom. Out in the open. If you don't like it, too bad.
If you don't like it as a parent, take your child out of the Portland system. Launch home schooling. Start your own private school. Move out of Portland to another public school district.
