Testing results must be reported by student "subgroups." These subgroups are: All Students; Ethnicity groups for African-American, American Indian/Alaskan Native, Asian/Pacific Islander, Hispanic, Multiracial, and White; Economically and Non-Economically Disadvantaged (based on information from the free and reduced lunch program); Limited English Proficient students; and Students with Disabilities. On School Accountability Report Cards, testing results are also reported by gender (male, female).

All groups under the TDWG

It is likely that various different subgroups exist within the umbrella term CFS/M.E. Subdivision should be based on explicit criteria that have been shown to distinguish separate subpopulations. Subdivision could be based on different sorts of categories, on different criteria, for different purposes (e.g. triggering event, response to treatment, severity).

Languages within a taxonomy of related languages that are most closely related.

Sub-divisions of the sample (e.g. men, women, those aged 15-25, etc).