Students who use laptops in classroom are getting lower grades than their counterparts who are not

Studies are on their way at Stanford University which preliminary results show shorter concentration span for students joggling their electronic toys and different social sites at the same time.  MIT has seen a decrease in the quality of their students check PBS "Frontline: Digital Nation" (even though I do not support their conclusion, the beginning of the video looks at some of the findings).  

Many colleges are responding to the crisis by shutting down internet access in their classrooms.