This article challenges the pervasive notion that linguistic and ethnic diversity are causes of the perceived gap in achievement in schools highly affected by Spanish-speaking students participating in programs of bilingual education. The study examines existing data from the state of Colorado with regard to student achievement and compares these…

Colorado Student Assessment Program (CSAP) results in third- and fourth-grade reading and writing, 1999-2001, were compared for Latinos taking the English or Spanish CSAP and all Colorado students. Latino students had equivalent or higher scores on the Spanish CSAP compared to the English CSAP, but had lower scores than all students, regardless of…