Parents aren’t the only ones concerned with their children’s increased reliance on cellphones. Teachers see the impact screens are having on children and teenagers in the classrooms, and it’s not good.

According to a Pew Research Center survey conducted last year, 72% of U.S. high school teachers consider cellphone distraction a major problem in their classrooms. Middle school teachers (33%) and elementary school teachers (6%) also share concerns about student distraction due to cellphones.