Claims

In high schools, extensive-PD schools started with significantly lower rigor and teacher support but closed the gap by early implementation, while academic demand and clarity improved at rates comparable to limited-PD schools

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 2018 · 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? High schools with extensive PD improved about 0.15 standard deviations in rigor and teacher support, closing a preexisting gap with limited-PD schools. → Julia A. Gwynne and Sarah Cashdollar 2018

Evidence

Julia A. Gwynne and Sarah Cashdollar 2018

Julia A. Gwynne and Sarah Cashdollar. (2018). Changes in Math Instruction and Student Outcomes since the Implementation of Common Core State Standards in Chicago. UChicago Consortium working paper. https://consortium.uchicago.edu/publications/changes-math-instruction-and-student-outcomes-implementation-common-core-state

q2 · i? · causal · r2

Difference-in-difference analysis of high school students' survey reports (grades 9-12) across three time periods; improvements among high schools with extensive PD were "0.15 standard deviations compared to approximately 0.10" for elementary schools.

"During the pre-implementation period, schools in which teachers would eventually report extensive standards-related professional development in 2015 started out with significantly lower levels of rigor and teacher support than schools with limited professional development, but by the early implementation period they had caught up and closed the gap."

Discussion

Page metadata
Field Value
type claim
id hs-extensive-pd-closed-rigor-support-gap
title In high schools, extensive-PD schools started with significantly lower rigor and teacher support but closed the gap by early implementation, while academic demand and clarity improved at rates comparable to limited-PD schools
description In high schools, extensive-PD schools started with significantly lower rigor and teacher support but closed the gap by early implementation, while academic demand and clarity improved at rates comparable to limited-PD...
status review
evidence_strength moderate
newest_evidence 2018
generated by process:wiki-ingest on 2026-10-08
trust unverified — no one has confirmed this page's content
sources 1 — julia-a-gwynne-and-sarah-cashdollar-2018

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