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Education is not a javascript app.

Even ignoring the consent and ethical issues, doing something double-blind in a government ran system impacting statistically significant number of children simply can't be done. You can't maintain the blinding.

'Automatic rollbacks' are, frankly, absurd. How do you 'roll back' a child in 8th grade that failed algebra? Your quick iteration turns into dozens of cohorts to be tracked and managed.

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I meant rollback of a policy that performed poorly. It is an interesting point you bring up about rolling back a child that I haven't considered. That might be a good policy to have.

A question to ask is it better for a kid to score 90% in algebra and it takes 2 more years or is it better that they score 50% and then move on to calculus. That would be a good A/B test to compare their lifetime earnings. My hypothesis is that calculus is a pretty useless skill and basic maths is more important in life.

There could be ways of doing A/B tests if the standardized tests are the same between states that have different curriculums.

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