Cited by 105Reliability and Agreement in MeasurementPsychometric Methodologies and TestingEvaluation of Teaching Practices

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Trends in Classroom Observation Scores

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Casabianca, Jodi M., Lockwood, J. R., McCaffrey, Daniel F.·2015·Educational and Psychological Measurement

Abstract

Observations and ratings of classroom teaching and interactions collected over time are susceptible to trends in both the quality of instruction and rater behavior. These trends have potential implications for inferences about teaching and for study design. We use scores on the Classroom Assessment Scoring System-Secondary (CLASS-S) protocol from 458 middle school teachers over a 2-year period to study changes over time in (a) the average quality of teaching for the population of teachers, (b) the average severity of the population of raters, and (c) the severity of individual raters. To obtain these estimates and assess them in the context of other factors that contribute to the variability in scores, we develop an augmented G study model that is broadly applicable for modeling sources of variability in classroom observation ratings data collected over time. In our data, we found that trends in teaching quality were small. Rater drift was very large during raters' initial days of observation and persisted throughout nearly 2 years of scoring. Raters did not converge to a common level of severity; using our model we estimate that variability among raters actually increases over the course of the study. Variance decompositions based on the model find that trends are a modest source of variance relative to overall rater effects, rater errors on specific lessons, and residual error. The discussion provides possible explanations for trends and rater divergence as well as implicat…

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Crossref · 10.1177/0013164414539163

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  • In Casabianca et al. (2015), the impact of the time trend on raters tended to be two to three times as large as the general impact of time on the practices being rated.

    “Though both trends were significant, the impact of the time trend on raters tended to be two to three times as large as the general impact of time on the practices being rated.”

    From Making Inferences About Teacher Observation Scores Over Time (2019) · cites this paper as Casabianca, Lockwood, and McCaffrey (2015)

  • Casabianca et al. (2015) found that main effect time trends are responsible for a fairly small proportion of observed score variance but can still introduce a significant source of bias.

    “Casabianca et al. (2015) find that while these main effect trends are responsible for a fairly small proportion of observed score variance, they can still introduce a significant source of bias.”

    From Making Inferences About Teacher Observation Scores Over Time (2019) · cites this paper as Casabianca, Lockwood, and McCaffrey (2015)

  • Casabianca et al. (2015) found that teaching practice scores showed evidence of a small linear decline over time.

    “Somewhat counterintuitively, teaching practice scores showed evidence of a small linear decline over time.”

    From Making Inferences About Teacher Observation Scores Over Time (2019) · cites this paper as Casabianca, Lockwood, and McCaffrey (2015)

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Metadata

Authors
Casabianca, J. M., Lockwood, J. R., & McCaffrey, D. F.
Affiliations
  • The University of Texas at Austin (US)
  • Educational Testing Service (US)
Venue
Educational and Psychological Measurement
Published
2014-06-22
Volume
75
Issue
2
Pages
311-337
ISSN
  • 0013-1644 (ISSN-L)
  • 1552-3888
OpenAlex
W2055440896
Cited by
105
References
1
Citations by year
2026: 5 · 2025: 6 · 2024: 7 · 2023: 6 · 2022: 13 · 2021: 14 · 2020: 14 · 2019: 17 · 2018: 13 · 2017: 4 · 2016: 4 · 2015: 1 · 2014: 1
FWCI
3.27
Type
journal article
Language
en
Open access
Locations
  • Educational and Psychological Measurement (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Reliability and Agreement in Measurement
  • Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
  • Social Sciences › Education › Evaluation of Teaching Practices
Keywords
classroom observation, rater severity, Classroom Assessment Scoring System, class S, junior high school teachers, rater variability, variance decomposition

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