Here's a quote from the introduction of "One to One Computing: A Summary of the Quantitative Results from the Berkshire Wireless Learning Initiative:"
1:1 computing has captured the imagination of many educational and political leaders looking to reform educational practices and improve underperforming schools.
The report mentions how more time was spent in homework, less time watching TV, fewer discplinary problems, etc.
Any independent school like Episcopal, and for that matter, affluent, suburban public schools, are going to have relatively few of the problems and at only a fraction of the severity that underperforming schools have. The improvements seen in underperforming schools will not be seen in such a different environment. The statistical evidence must be approached with caution. Average findings are probably irrelevant to a large proportion of any sample.
The question is, Can you see it at your school?