The latest ridiculous idea: make your children study by actually physically constraining them with balls and chains. Follow the link for the usual high-charge punchline commentary from Slashdot.
However, I think I actually have a better idea. Having only a ball chained to your foot can still be distracting, you could look at the birds in the trees or the clouds in the sky or the people in the street or the patterns on your wallpapers, or do something else rather than study/solve problems/write essays. I suggest we build mobile holding cells for unruly students (the iStudyCell!), lock them in, and let them toil there. That’ll teach them, the bastards!!! Just make the interior as un-distracting as possible — completely white, for example, so that, after a while, they get the feeling they are in some old-style medical institution. Scratch that; the interior has to be black, so that no one and nothing can write on it. Also, limit intake of food and drink by providing just a small slot for a water straw and (very thin) slices of bread. All the student needs is light from a light-bulb, books, and writing materials. Place the iStudyCell anywhere in your place of living and enjoy the increase in silence and the better grades. So here are the specifications. Anyone willing to design and produce?