Teaching is a bizarrely evidence-free field. It's as if there's an active aversion to finding out whether a method or tool works or not. I can't think of any field where so little is known, where there is such a paucity of good data. We've been spending hundreds of millions on putting technology in classrooms, without a shred of evidence that it improves learning outcomes. As a society we do plenty of things that we…
1. We all gamed in class and got a shred of work done.
2. A fraction of the teachers used the boards, even though they were all trained how to.
3. They were crappy Dells that spent a good deal of time being repaired so many students were without a laptop on any given day.
4. I was personally taken home in a police car by the school officer and had my laptop confiscated for using VNC on a teacher's unsecured Smartboard. Those things caused way more trouble than good.
Oh...and our rival school all bombarded the local Blackboard servers on Exam day and DDoS'ed their way out of exams.