Stanford no-tech classroom rule made the same lecture take 50% longer to cover

Afinetheorem · x · 2026-10-29

Guest lecturing in two Stanford courses, Keith Humphreys found the same material took 50% longer to cover than the prior year after a no-devices-in-class rule, with a big jump in student engagement and questions. Afinetheorem agrees: banning laptops/phones in class, raising standards, and using tech outside class for learning is better pedagogy that students prefer.

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