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
- writing6
- health4
- math4
- debunked3
- reading3
- science3
- arts2
- assessment2
- character2
- early childhood2
- foreign language2
- grouping2
- music2
- time2
- transfer2
- behavior1
- class size1
- computer science1
- curriculum1
- edtech1
- history civics1
- mastery1
- motor skills1
- physical development1
- practical1
- retention1
- school structure1
- sport1
- teachers1
- tutoring1
verdict
confidence
layer
survival prior
- nothing assessed yet
Your situation · from the applicability layer — absence means “not yet assessed,” never “doesn’t apply”
who's delivering
group / setting
cost
outcome class
Group within classes or across grades by subject: modest, nearly free wins. Whole-school streaming does nothing, and early between-school tracking harms the bottom.
moderate supportconf: highgc: lowAbility grouping and tracking — four practices, four verdicts · grouping · ages 5–18 · structure
Accelerate ready kids: they keep pace with older classmates, bank a year, and show no social-emotional harm at 50. The gifted label itself does nothing; the content does.
moderate supportconf: highgc: mediumAcceleration and gifted programs — the label vs the content · grouping · ages 5–18 · structure
The URL is the state — any view you build here is a permalink you can hand to someone mid-argument.