An outright ban on technology in the classroom – which may or may not include the pen and paper – is not the right answer. If one wishes to curb disruptive behavior, then ban disruptive behavior instead of banning all the little things that could be disruptive.
This was part of the opening keynote in Wikimania 2008, given by the Egyptian Deputy Minister of Communication and IT, Hoda Baraka. Here are my notes, again without any commentary – I apologize for them not being cleaner.