In this technical report, we document the results of a cross-validation study designed to identify optimal cut-scores for the use of the easyCBM[R] mathematics test in the state of Washington. A large sample, randomly split into two groups of roughly equal size, was used for this study. Students' performance classification on the Washington state…

In this technical report, data are presented on the practical utility, reliability, and validity of the easyCBM[R] mathematics (2009-2010 version) measures for students in grades 3-8 within four districts in two states. Analyses include: minimum acceptable within-year growth; minimum acceptable year-end benchmark performance; internal and…

Four alternate versions of a 15-item general outcome measure (GOM) of mathematics conceptual understanding and applications were developed and administered to 117 eighth-graders. Results were correlated with scores on state multiple-choice mathematics achievement tests. Correlations ranged from .81 to .87 with no significant differences, offering…

Convergent validity and divergent validity were studied in several basic skill areas using the multitrait-multimethod procedure outlined by D. T. Campbell and D. W. Fiske (1959). The academic skill domains considered were: (1) reading; (2) mathematics; (3) writing and language arts; and (4) spelling. A total of 297 students in grades 1 through 5…