The Evidence on Teaching

Explore the evidence

7 of 88 decisions · clear everything

Survives the gold standardIndependent, durable, rigorousThe debunked shelfCheap winsFor parents at homeFamous numbers, deflatedWhere we admit ignoranceThe terrain
evidencealldrop DA–BA only
evaluatoranyno dev-ledindependent
durabilityanyfollow-up≥1yr≥2yr
what are these? →
sortconfidencerobustfragileA–Z
domain
verdict
confidence
layer
survival prior
Your situation · from the applicability layer — absence means “not yet assessed,” never “doesn’t apply”
who's delivering
group / setting
cost
outcome class

Neither acceleration mandates nor delay mandates work — readiness-matched placement does. Push everyone and the median falls; hold everyone back and the top falls.

mixedconf: highgc: low
9/936/48connected:Acceleration and gifted programsSchool starting age, relative age,

Algebra timing — acceleration mandates, delay mandates, and readiness-based placement · math · ages 11–18

The textbook matters at the bottom, not the top: avoid the demonstrated losers; mainstream choices now differ by ~0.02 SD.

mixedconf: highgc: low
11/1124/48connected:Background knowledge and vocabularSchool spending, charters, and wha

Math curriculum choice — how much does the textbook matter? · math · ages 5–14

Life-skills courses reliably teach the content and rarely change the conduct; behaviour moves only where instruction sits close in time to the decision, and driver education is worse than nothing.

mixedconf: mediumgc: low
11/1148/48

Do life-skills courses — money, cooking, driving, health — change what students actually do? · practical · ages 6–18

Sort by what the software replaces: adaptive drill inside the school day buys +0.05-0.20 SD; a device, a connection or the teacher buys zero to negative; LLM tutors have no usable evidence at all.

mixedconf: mediumgc: low
53/5339/48connected:Placement and mastery diagnosisMastery learning (teach → test → rTutoringClass-size reduction

Does educational technology raise learning — CAI, adaptive software, devices, screens, and AI tutors? · edtech · ages 5–18 · structure

Classroom order is causally worth a great deal — one disruptive peer costs classmates 3% of adult earnings — yet no branded behaviour programme reliably delivers it and exclusion makes things worse.

mixedconf: mediumgc: low
25/2536/48connected:Talent and trainabilityCan executive function be trained,Should a school buy a social and eAre self-control and grit teachabl

How should a school run its classrooms and its discipline system? · behavior · ages 4–18 · structure

Reading Recovery buys large short-term gains at high cost; the only US long-term estimate is negative. Early 1:1 tutoring works — this model's durability is unproven.

mixedconf: mediumgc: low
5/536/48connected:Systematic/explicit phonics vs who

Reading Recovery and Tier-2 1:1 early-literacy tutoring · reading · ages 5–8

Strategy instruction is a one-time boost, not a trainable skill: six sessions buy what fifty do, and modern at-scale trials are ~null.

mixedconf: mediumgc: low
4/46/48connected:Does teaching grammar improve chilSystematic/explicit phonics vs whoBackground knowledge and vocabularDoes teaching spelling work, and w

Reading-comprehension strategy instruction (reciprocal teaching, summarizing, questioning) · reading · ages 8–14

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