Explore the evidence
2 of 88 decisions · clear everything
Survives the gold standardIndependent, durable, rigorousThe debunked shelfCheap winsFor parents at homeFamous numbers, deflatedWhere we admit ignoranceThe terrain
domain
Your situation · from the applicability layer — absence means “not yet assessed,” never “doesn’t apply”
who's delivering
group / setting
cost
outcome class
Later bells buy adolescents 40+ measured minutes of sleep — the best-identified positive effect in the archive; the achievement payoff is real but far smaller.
strong supportconf: mediumgc: low9/1836/48
Do later school start times increase adolescent sleep, and does that raise achievement? · health · ages 11–18 · input
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: medium10/3336/48connected:Homeschool socialisationDoes homeschooling raise achievemeThe early home environmentTutoring
The parent as instructor — what survives when the person teaching is the person who raised the child · homeschool · ages 4–18 · method
Not yet assessed for this question · 15
- Chronic absenteeism — does raising attendance raise achievement?
- Deliberate practice and the 10,000-hour rule
- Physical activity as an input — dose, fitness, and school outcomes
- Explicit instruction vs discovery/inquiry — how much guidance?
- Feedback and formative assessment
- The early home environment — what parents can and cannot causally move
- Interleaving (mixing problem types vs blocking)
- Mastery learning (teach → test → reteach to criterion → advance)
- Breakfast, school meals, and micronutrients — what feeding children actually buys
- Retrieval practice (the testing effect)
- Spaced (distributed) practice
- Talent and trainability — what is heritable, and what that does not license
- Tutoring — the honest effect, the Bloom 2-sigma myth, and what survives scale
- Vision — outdoor time against myopia, and screening and correction for achievement
- Worked examples (studying solutions vs solving problems)
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