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
survival prior
Your situation · from the applicability layer — absence means “not yet assessed,” never “doesn’t apply”
who's delivering
outcome class
Near-zero in primary and almost entirely correlational in secondary. The causal base is three small trials; what the homework IS beats how much of it there is.
mixedconf: mediumgc: medium16/1629/48
Homework — effects by age and by dosage · homework · ages 5–18 · structure
School exercise programs don't raise achievement: four of the five largest RCTs are null, and more dose doesn't rescue it. Exercise for health, not for grades.
no effectconf: mediumgc: lowPhysical activity as an input — dose, fitness, and school outcomes · health · ages 4–18 · input
Not yet assessed for this question · 8
- Chronic absenteeism — does raising attendance raise achievement?
- Grade retention — holding a child back versus promoting, and test-based promotion policies
- Vision — outdoor time against myopia, and screening and correction for achievement
- Length of the school day and year, time-on-task, extended time, and summer
- Breakfast, school meals, and micronutrients — what feeding children actually buys
- Placement and mastery diagnosis — deciding what to teach next from evidence of current skill
- Perry Preschool and Abecedarian — what the famous studies actually establish
- Do later school start times increase adolescent sleep, and does that raise achievement?
The URL is the state — any view you build here is a permalink you can hand to someone mid-argument.