10/ Every kid has a school-assigned laptop at my boys' school, starting from about age 10. It has Chrome (subject to some school filters). They learn how to use Google Docs and a web browser. They use their laptops in most classes.
Then the school tells us parents they are distracted by their laptops.
Well of COURSE they're distracted by their laptops. You have given them a device, and blocked everything except the social sites specifically designed to steal their attention. Surprised?