I am glad to see there is finally some research becoming available that is looking at the impact of having students use computers and tablets in the classroom. The verdict is that it has been a disaster.
Aside from studies that show making written notes improves retention, the machines are a distraction...if you are fiddling with your laptop or tablet you are not paying attention. Learning outcomes have plummeted since the introduction of digital technology in the classroom.
Many classical and charter schools have already figured out that traditional teaching methods (paper textbooks, whiteboards, written notes) gives much better results. Let's hope this new research accelerates the return of the old ways.