; (B) for which not less than 20 percent of the children served by the agency are from families with incomes below the poverty line; (C) that is in the highest quartile of local educational agencies in the State, based on student poverty; or (D) for which not less than 75 percent of the children served by the agency are historically underrepresented students. (13) High school The term high school has the meaning given the term in section 8101 of the Elementary and Secondary Education Act of 1965. (14) Historically underrepresented student The term historically underrepresented student means— (A) a student, or prospective student, at an institution of higher education who is at risk of educational failure or otherwise in need of special assistance and support