The Evidence on Teaching

Explore the evidence

6 of 88 decisions · clear everything

Survives the gold standard Independent, durable, rigorous The debunked shelf Cheap wins For parents at home Famous numbers, deflated Where we admit ignorance The terrain

evidenceall drop D A–B A only

evaluatorany no dev-led independent

durabilityany follow-up ≥1yr ≥2yr

what are these? →

Your situation · from the applicability layer — absence means “not yet assessed,” never “doesn’t apply”

who's delivering

parent3

group / setting

cost

outcome class

The 10,000-hour rule is dead: practice explains ~14% of performance variance, is itself heritable, and identical twins 20,000 hours apart didn't differ. Necessary, insufficient.

mixedconf: highgc: medium

8/836/48connected:Does teaching music produce musica

Deliberate practice and the 10,000-hour rule · deliberate-practice · ages 6–18 · method

Feedback on the task helps modestly; feedback on the person backfires — a stable third of studies reverse. The famous 0.4–0.7 number has no computed source.

mixedconf: highgc: low

18/1812/48connected:Retrieval practice (the testing ef Does teaching music produce musica Placement and mastery diagnosis

Feedback and formative assessment · feedback · ages 5–18 · method

Teaching movement teaches movement: the skills improve, but transfer to cognition, achievement, or lifelong activity is near zero in the best trials.

no effectconf: highgc: medium

7/710/48connected:Does arts education raise academic Physical activity as an input Does teaching grammar improve chil Does handwriting and transcription+5

Does teaching movement transfer to cognition, achievement, or lifelong activity? · physical-development · ages 4–18

What parents are asked to DO is the whole effect: tutoring a skill d≈1.15, listening to reading 0.51, reading aloud ~0.18 — same parent, same child. All deflate under better designs.

mixedconf: mediumgc: medium

33/3336/48connected:Homeschool socialisation Does homeschooling raise achieveme The early home environment Tutoring

The parent as instructor — what survives when the person teaching is the person who raised the child · homeschool · ages 4–18 · method

No study of homeschooling has a counterfactual — the famous percentile claims are selection all the way down. The honest answer: nobody knows.

insufficientconf: lowgc: high

23/2336/48connected:Homeschool socialisation The parent as instructor Systematic/explicit phonics vs who Math-fact fluency and timed practi

Does homeschooling raise achievement and attainment, or does it select the children who would have done well anyway? · homeschool · ages 5–18 · structure

Homeschoolers get plenty of social contact but measurably fewer, closer peer ties; whether that helps or harms has never been causally tested.

insufficientconf: lowgc: high

23/2324/48connected:Does homeschooling raise achieveme The parent as instructor

Homeschool socialisation — the most-asked question, and the least answerable one · homeschool · ages 6–18 · structure

The URL is the state — any view you build here is a permalink you can hand to someone mid-argument.