Oregon, along with most of the other states, has adopted the new Next Generation Science Standards, but the school board at Portland Public Schools has decided that the textbooks associated with NGSS may not be permitted due to the fact that the texts consider natural variability among the drivers of climate change. To do so would conflict with the Board's recent order to PPS, which reads thus:
"PPS will abandon the use of any adopted text material that is found to express doubt about the severity of the climate crisis or its root in human activities."
Science textbooks are being written for nationwide distribution in accordance with the NGSS, as are the tests. Yet while PPS will be required by the state to administer these tests, the PPS school board appears to have decreed that the material to be covered by the tests may be prohibited in PPS classrooms:
The standards recognize that both natural processes and human activities can affect climate. Most importantly they draw no conclusion regarding the as yet unsolved attribution problem, which is how much of the observed global warming is natural versus human-caused?
According to the school board, any refusal or failure to observe that the "climate crisis" is caused by human activities amounts to "denialism" and therefore cannot be used in the classrooms. This situation virtually guarantees that students will be unable to pass the state-required tests because they will be denied the opportunity to peruse the materials associated with the tests.
Next Gen Standards say the students will know how to do this:
"Use a model to describe how variations in the flow of energy into and out of Earth’s systems result in changes in climate. Clarification Statement: Examples of the causes of climate change differ by timescale, over 1-10 years: large volcanic eruption, ocean circulation; 10-100s of years: changes in human activity, ocean circulation, solar output;..."
Note that changes in ocean circulation and solar output compete with human activity as causes of climate change on the scale of 10-100s of years, and these are just examples. That all climate change is due to human activity is implicitly denied, as it should be.
But in Portland, students are unlikely to even see the model that the tests will require them to know how to use, due to the orders from the school board. There's a reason why I refer to man-made global cooling/global warming/global wetness/global dryness/climate change as a religion, and it appears that the PPS school board are devout practitioners.