Reality check:

    The average American teenager spends six hours a day
    texting, 90 minutes a day on Facebook, and more than
    three hours a day watching TV on the computer

That's 10.5 hours. Assume they sleep for 8 and go to school for 6, that's 24.5 hours a day.

Probably they spend some of their school time on Facebook, or texting, but even so, do they do nothing else?

really?