Claims

After Michigan adopted a standard ranking scale, the percentage of failures remained below 3 per cent instead of approaching 10 per cent

Claim · All claims
Evidence · 1 study · design r? · q1
Currency · newest study 1911 · 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.

q1 i? When the Michigan Department of Literature, Science and the Arts adopted the suggested scale, other ranks approached the named percentages but failures stayed below 3 per cent. → Kohl 1911

Evidence

Kohl 1911

Kohl, C. C., & Hughes, P. (1911). Communications and discussions. The Journal of Educational Psychology. https://eric.ed.gov/?q=Journal+of+Educational+Psychology

q1 · i? · design · r?

Institutional observation cited in the marking-systems communication: after adopting the standard scale, "the percentage of failures continued below 3 per cent, instead of approaching the 10 per cent." No formal statistics are printed; the figures are descriptive percentages.

"when the Michigan Department of Literature, Science and the Arts adopted the scale suggested above, there was an approach to the percentages named, except that the percentage of failures continued below 3 per cent, instead of approaching the 10 per cent, required by a symmetrical imagination"

Discussion

Page metadata
Field Value
type claim
id michigan-scale-failures-below-3-percent
title After Michigan adopted a standard ranking scale, the percentage of failures remained below 3 per cent instead of approaching 10 per cent
description After Michigan adopted a standard ranking scale, the percentage of failures remained below 3 per cent instead of approaching 10 per cent
status review
evidence_strength weak
newest_evidence 1911
generated by process:wiki-ingest on 2026-10-24
trust unverified — no one has confirmed this page's content
sources 1 — kohl-1911

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