The 2014 Jefferson County Public Schools protests were a series of demonstrations against the new AP United States History (APUSH) curriculum in Jefferson County in the U.S. state of Colorado. Protests began on Friday, September 19, 2014, at Standley Lake and Conifer high schools when classes were cancelled at both schools because a high number of teachers called in absent to work. On September 22, the protests spread to Evergreen when students left class on marched on the Jefferson County Schools Education Center. On September 23, the protests spread to Pomona, Arvada, and Ralston Valley high schools. Two days later, the protest grew to about 1,000 when Columbine and Dakota Ridge students joined together on a pedestrian bridge over South Wadsworth Boulevard.