The samples for the 2008 arts assessment were selected using a multistage sampling design that involved sampling students from selected schools within selected geographic areas across the country. The sample design had the following stages:
Each selected school that participated in the assessment and each student assessed represents a portion of the population of interest. Results are weighted to make appropriate inferences between the student samples and the respective populations from which they are drawn. Sampling weights are adjusted for the disproportionate representation of some groups in the selected sample. This includes the oversampling of schools with high concentrations of students from certain racial/ethnic groups and the lower sampling rates of students who attend very small schools.
School officials advised assessment staff on students with disabilities and English language learners (SD/ELL) accommodations necessary for individual students sampled for an assessment in a given arts discipline. Students for whom recommended SD/ELL accommodations could not be made were classified as ineligible for the assessment.
View the participation rates for the 2008 arts assessment.