Disproportionality refers to the overrepresentation of a particular racial or ethnic group in one of four areas:. Special education in general;. Special education within a specific disability category;. Disciplinary action; and. More restrictive educational environments. 2011 SPP-TAP and California Department of Education. Please read disclaimer. A Special Project of the Napa County Office of Education. 5789 State Farm Drive, Rohnert Park, CA 94928.