The phrase "disproportionate representation" means that a certain group or population is not adequately or fairly represented compared to other groups, usually in terms of power, influence, or access to resources. Full definition
Reducing disproportionate representation of culturally diverse students in special and gifted education. (hoagiesgifted.org)
And the posters still pop up in gallery districts, calling attention to disproportionate representation in the art world and wage inequality. (nytimes.com)
Such knowledge is essential if we are to reduce disproportionate representation and offer equal educational opportunity to all American students. (hoagiesgifted.org)