1.
Data imputation for 2017–2019.
Correlations of value-added scores.
Covariance table of VA scores with different outcome domains (mathematics and language) over time.
Minimal dataset and codebook of school’s VA quartile ranking across time and domains.
Illustration of high and low VA schools performing above and below what is expected of them from one measurement point to another.
Graphical representation of the VA score intercorrelations across time and domains.
Transition diagrams indicating changes in the schools’ value-added score ranking quartiles from 2017 to 2019.
Overview of prior research on the stability of school value-added scores over time, their included variables, samples, and conclusions.
Reliability coefficients for the achievement scores for the 2015–2017 and 2017–2019 data sets.
Descriptive data of the two samples used in the present study.
