Implementation fidelity matters: classrooms using only Montessori materials produced greater gains than classrooms mixing in other materials¶
Claim · All claims
Evidence · 1 study · reviewr2·q2
Currency · newest study 2019 · 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? In an experimental study, removing non-Montessori materials led to greater reading and executive function gains across a semester than retaining them. → Angeline S. Lillard 2019
Evidence¶
Angeline S. Lillard 2019¶
Angeline S. Lillard. (2019). Shunned and Admired: Montessori, Self-Determination, and a Case for Radical School Reform. Educational Psychology Review. https://doi.org/10.1007/s10648-019-09483-3
q2 · i? · review · r2
The review reports the Lillard and Heise (2016) experimental implementation study, in which "the non-Montessori materials were removed" from classrooms and children advanced more in reading and executive function across a semester than in a comparison classroom that retained them.
"Children in classrooms in which the non-Montessori materials were removed advanced more in reading and executive function across a semester than children in a classroom that retained its non-Montessori materials"
Discussion¶
Related Claims¶
- Children admitted by random lottery to high-fidelity Montessori schools performed better or the same as waitlisted controls on academic, executive function, and social measures, never worse — related
- Tools of the Mind and Montessori curricula improve children's EFs, with Tools children outperforming controls especially on more EF-demanding conditions — related
- Low-income children in high-fidelity Montessori significantly closed the achievement gap with higher-income children by the end of a longitudinal lottery study — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
montessori-fidelity-materials-only-gains |
title |
Implementation fidelity matters: classrooms using only Montessori materials produced greater gains than classrooms mixing in other materials |
description |
Implementation fidelity matters: classrooms using only Montessori materials produced greater gains than classrooms mixing in other materials |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2019 |
generated |
by process:wiki-ingest on 2026-10-19 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — angeline-s-lillard-2019 |
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