TY - JOUR A1 - Ogbu, J.U. A1 - Simons, H.D. T1 - Voluntary and involuntary minorities: A cultural-ecological theory of school performance with some implications for education Y1 - 1998 DO - 10.1525/aeq.1998.29.2.155 JF - Anthropology and Education Quarterly VL - 29 IS - 2 ER -