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Patterns in the Identification of and Outcomes for Children and Youth With Disabilities
NCEE 2010-4005
January 2010

Exhibit ES.7. Mean literacy, numeracy, and preacademic skills scores of 3- through 5-year-olds identified for services under IDEA (2005)

Exhibit ES.17 Mean literacy, numeracy, and preacademic skills scores of 3- through 5-year-olds identified for services under IDEA (2005)

Exhibit reads: Preschool-age children identified for services under IDEA had a mean standard score of 98 on the letter-word identification subtest.

NOTE: Data were preliminary at the time of publication (2005). Findings reported in the exhibit are based on a direct assessment of individual students using Woodcock-Johnson III (WJ III) (Woodcock, McGrew, and Mather 2001), Peabody Picture Vocabulary Test-Third Edition (PPVT-III) (Dunn and Dunn 1997), and Adaptive Behavior Assessment System-Second Edition (ABAS-II) (Harrison and Oakland 2003). All measures are based on a general population mean of 100 and a standard deviation of 15. The presented confidence intervals represent plus or minus 1.96 multiplied by the standard error.

SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Special Education Research, Pre-Elementary Education Longitudinal Study (PEELS), direct assessment, 2005.