Abstract
The Writing Essential Skill Screener–Upper Elementary Version was designed to assess students in Grades 3 to 6 at risk for difficulties in written expression. Four independent samples were used to study the Screener's reliability and validity. Thirty-day test-retest reliability was .83 and concurrent validity coefficients ( n = 275) were .66 with the Woodcock-Johnson: Tests of Achievement–Revised Written Language domain and .80 with the Wide-Range Achievement Test–Revised Spelling subtest. Exploratory factor analytic procedures suggest the Screener has a single dimension, Written Expression. A diagnostic efficiency study indicated the total predictive value was 86%, sensitivity was .91, specificity was .80, positive predictive power was .82, and negative predictive power was .90.
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