Each sampled school holds one or more assessment sessions. Determining what assessment sessions each school administers depends on four session characteristics:
Assessment subject indicates the tested academic subject for the session. These subjects vary by grade and NAEP assessment.
Sample type indicates whether or not the session allows accommodations for students with disabilities or limited English proficiency.
Monitor status indicates whether or not a NAEP representative monitors the assessment session.
A drop flag indicates which assessment subject to drop if a school assigned assessment sessions in both subjects can only handle a single session.