A charter school boss runs the numbers (via the WaPo):
At Harlem Success Academy Charter School, where we’ve gotten some of the best results in New York City, some classes are comparatively large because we believe our money is better spent elsewhere. In fifth grade, for example, every student gets a laptop and a Kindle with immediate access to an essentially unlimited supply of e-books. Every classroom has a Smart Board, a modern blackboard that is a touch-screen computer with high-speed Internet access. Every teacher has a laptop, video camera, access to a catalogue of lesson plans and videotaped lessons.