Daniel Buck:

In a few years, the greatest disparity in American education won’t be rich versus poor or black versus white but low-tech versus high-tech schools. Affluent families will cough up tuition to secure a school with paper and pencils, in-person discussions, and hard-copy books for their children. Meanwhile, the rest of American children will spend their school days clicking through online learning platforms.

Indeed, surveys find that students already spend at least one hour of class time on screens per day, with 27 percent of students spending five hours staring into Chromebooks and iPads at school. Seeing as the average school day …