“Change rarely comes without some bumps in the road,” said Gordon Mohn, McPherson’s superintendent of schools. He added, “Students are becoming self-directed learners and are demonstrating greater ownership of their learning activities.”

John Buckendorf, Wellington High School’s principal, said the “vast majority of our parents are happy with the program.”

The resistance in Kansas is part of mounting nationwide opposition to Summit, which began trials of its system in public schools four years ago and is now in around 380 schools and used by 74,000 students. In Brooklyn, high school students walked out in November after their school started using Summit’s platform. In Indiana, Pa., after a survey by Indiana University of Pennsylvania found 70 percent of students wanted Summit dropped or made optional, the school board scaled it back and then voted this month to terminate it. And in Cheshire, Conn., the program was cut after protests in 2017.

“When there are frustrating situations, generally kids get over them, parents get over them, and they all move on,” said Mary Burnham, who has two grandchildren in Cheshire’s school district and started a petition to end Summit’s use. “Nobody got over this.”

Silicon Valley has tried to remake American education in its own image for years, even as many in tech eschew gadgets and software at home and flood into tech-free schools. Summit has been part of the leading edge of the movement, but the rebellion raises questions about a heavy reliance on tech in public schools.

For years, education experts have debated the merits of self-directed, online learning versus traditional teacher-led classrooms. Proponents argue that programs like Summit provide children, especially those in underserved towns, access to high-quality curriculums and teachers. Skeptics worry about screen time and argue that students miss out on important interpersonal lessons.