Claims

Best and poorest drill pupils both gained more than their non-drill counterparts, narrowing the within-class gap

Claim · All claims
Evidence · 1 study (2 entries) · causal r1 · q2
Currency · newest study 1915 · not yet checked against its sources · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q2 i? Best 19 drill pupils averaged a gain of 26 points versus 10 for best non-drill pupils; poorest 19 drill pupils averaged -3.1 versus -8 for poorest non-drill; the best-to-poorest ratio fell from 3.1 to 1.9 in drill sections. → Brown 1915 q2 i? On the second test the best 19 of the drill sections scored 1.9 times as many points as the poorest 19, down from 3.1 times on the first test. → Brown 1915 (2)

Evidence

Brown 1915

Brown, J. C. (1915). An Investigation on the Value of Drill Work in the Fundamental Operations of Arithmetic. Part II. The Journal of Educational Psychology. https://psycnet.apa.org/journals/edu/

q2 · i? · causal · r1

Gross-gain comparison of the best and poorest 19 pupils of drill versus non-drill sections, based on first-test records. Best drill pupils gained 18 to 46 points (average 26, median 22) versus 6 to 19 points (average 10, median 9) for best non-drill pupils; poorest drill pupils averaged -3.1 versus -8 for poorest non-drill.

"The best 19 of the drill classes made a gain ranging from 18 to 46 points, with an average of 26 points, and a median gain of 22 points."

Brown 1915 (2)

Brown, J. C. (1915). An Investigation on the Value of Drill Work in the Fundamental Operations of Arithmetic. Part II. The Journal of Educational Psychology. https://psycnet.apa.org/journals/edu/

q2 · i? · causal · r1

Comparison of best and poorest 19 of the drill sections across the two tests: the best-to-poorest score ratio was 3.1 times on the first test and 1.9 times on the second test, indicating a narrowed gap under drill. Figures are descriptive ratios; no test statistic is printed.

"On second test best 19 scored 1.9 times as many points as poorest 19."

Discussion

Page metadata
Field Value
type claim
id drill-narrows-best-poorest-gap
title Best and poorest drill pupils both gained more than their non-drill counterparts, narrowing the within-class gap
description Best and poorest drill pupils both gained more than their non-drill counterparts, narrowing the within-class gap
status review
evidence_strength moderate
newest_evidence 1915
generated by process:wiki-ingest on 2026-10-23
trust unverified — no one has confirmed this page's content
sources 2 — brown-1915, brown-1915-2

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