From an article in today's WaPo about teenagers' TV habits:

Daheia J. Barr-Anderson and her colleagues found that the two-thirds of youths who had a bedroom set watched more TV, moved less and had poorer diets and lower grades than those without one.

Also, 

Boys were more likely to have bedroom TVs than girls (68 percent vs. 57 percent), and there were variations among ethnic groups: Eighty-one percent of black youths had a set, compared with 66 percent of Hispanics, 60 percent of whites and 39 percent of Asians.

So, 'kette, I'm suggesting a revision of one line in a recent post:  "That means that a value-added measure would estimate the effects of teacher pairs trios, not individual teachers: one teacher teaches students from January to June, and another from September to January, [and yet another for hours and hours every night]."

(Photo by Flickr user jek in the box used under a Creative Commons license.)