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National Center for Special Education Research


Characteristics of States Monitoring and Improvement Practices
NCSER 2008-3008
October 2007

Table D-22.  Number and percentage of states that used random sampling to select child records for review, by type of random sampling used: School year 2004-05

Type of random sampling Percent of
Number of states All states [N=51] States that used random sampling [n=46]
Random sampling not used1 5 10
Simple random sampling used 5 10 11
Stratified random sampling used 38 75 83
Other type of sampling used 3 6 7
Not applicable.
1 Includes child records not reviewed and nonresponse.
NOTE: Percentages may not sum to totals because of rounding.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Special Education Research, Evaluation of States' Monitoring and Improvement Practices Under the Individuals with Disabilities Education Act, Part B Monitoring Evaluation Questionnaire.