Claims

Case records show a school's efficiency percentage depends heavily on the teacher's rating, dropping to 68⅔ per cent when the teacher rated below her predecessor

Claim · All claims
Evidence · 1 study · design r1 · q1
Currency · newest study 1913 · 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? In the New Hampshire one-room school case record, a very strong teacher was the one redeeming feature and kept efficiency relatively high, and two years later a lower-rated teacher left the school at only 68⅔ per cent efficiency despite improvement elsewhere. → Ernest C. Witham 1913

Evidence

Ernest C. Witham 1913

Ernest C. Witham. (1913). School and Teacher Measurement. The Journal of Educational Psychology. https://eric.ed.gov/?q=Witham+school+and+teacher+measurement

q1 · i? · design · r1

Case-study records of a small one-room school in New Hampshire, rated four years earlier when "It was only an apology for a school" until a very strong teacher took charge, and again two years later. The later graph shows improvement in most respects but lower efficiency because of the teacher's rating.

"The graph shows a marked improvement in most respects, but owing to the fact that the teacher's rating is considerably below that of her predecessor, the efficiency of the school is only G8y3 per cent."

Discussion

-

Page metadata
Field Value
type claim
id witham-case-teacher-rating-drives-school-efficiency
title Case records show a school's efficiency percentage depends heavily on the teacher's rating, dropping to 68⅔ per cent when the teacher rated below her predecessor
description Case records show a school's efficiency percentage depends heavily on the teacher's rating, dropping to 68⅔ per cent when the teacher rated below her predecessor
status review
evidence_strength weak
newest_evidence 1913
generated by process:wiki-ingest on 2026-10-24
trust unverified — no one has confirmed this page's content
sources 1 — ernest-c-witham-1913

Frontmatter is the page's machine-readable record — see the Schema & Guide.