Too much--or not enough?--of a good thing....one-to-one computing

So, which way does the evidence go? Do primary and secondary students benefit from "one laptop, one child" policies? How do these benefits compare with the costs of such programs, and what is the "bang per buck" of these programs compared to other educational programs or interventions? Do the answers to these questions vary with the SES of students, or whether these programs are implemented in industrialized, developed nations, as opposed to developing countries?

Wish I could answer those questions! Maybe over the summer, in my "spare" time.....in the meantime, here's a site for a nonprofit organization whose name, "One Laptop Per Child," speaks to its purpose: http://www.laptop.org/ . And for a recent news article, check out "Seeing No Progress, Some Schools Drop Laptops," New York Times on May 4, 2007. (This link works for the moment:
http://www.nytimes.com/2007/05/04/education/04laptop.html?ref=education)