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The Bangalore Laptop Study
Toyama's canonical case: the 2004 Microsoft Research India deployment of computers in Karnataka schools that produced spectacular outcomes where teachers were strong and no improvement where teachers were weak. The study that made the Law of Amplification visible.
In 2004, Toyama's team at Microsoft Research India deployed personal computers with educational software in schools across rural Karnataka. The technology was identical across schools. The software was well-designed. The deployment followed best practices. And the outcomes diverged sharply along a single axis: the capacity of the teachers who received the machines. In schools with capable, motivated teachers, learning outcomes improved measurably. In schools without such teachers, the computers gathered dust, became distractions, or in some cases produced measurable declines in learning as time previously spent on instruction was displaced by poorly supervised machine use. The pattern, observed across dozens of schools, crystallized into the law that has structured Toyama's subsequent career.
In The You On AI Field Guide
The study's importance lies not in the finding itself — that good teachers plus technology produces better outcomes than weak teachers plus technology — but in the specific structure of the finding.