High school students in suburban Denver are staging protests in response to two major changes proposed by their school board. The first, which has already been adopted, is a pay-grade system that ties teacher salaries to performance reviews. The second is still being considered, but it’s far more controversial: It would modify the AP US History curriculum to, in essence, teach a more right-wing-friendly vision of America’s past.

“Materials should promote citizenship, patriotism, essentials, and benefits of the free enterprise system, respect for authority, and respect for individual rights,” reads the history proposal, presented by newly elected conservative board member Julie Williams. “Materials should not encourage or condone civil disorder, social strife, or disregard of the law. Instructional materials should present positive aspects of the United States and its heritage.”