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National Center for Special Education Research


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

Table D-24a.  Number and percentage of states that used oversampling for one or more categories: School year 2004-05

Response options Percent of
Number of states All states [N=51] States that used stratified random sampling [n=38]
Did not use stratified random sampling1 13 25
Used oversampling 13 25 34
Did not use oversampling 25 49 66
Not applicable.
1 In addition to other types of sampling, this 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.