242 do work specifically related to the interdependence theory. Much remains unknown about the relationship between first language ability and second language acquisition. Research on the interdependence of language is, in part, a response to educational policy which views instruction in the first language as counterproductive to English acquisition (Cummins et al., 1982). The purpose of this research is to study the relationship between first language ability and second language learning and to explore some other factors which influence the learning of a second language. When compared with the number of studies that have been done with Mexican and Puerto Rican students, little educational research exists on Cubans. Since Cubans currently represent the largest limited English proficient population in the Florida school system, they were chosen as the target population of the research. Discussion of Hypotheses and Research Questions Hypothesis One Using standardized written and oral measurements, students judged to be more proficient in Spanish will be found to make significantly more progress in learning English than students who are determined to be less proficient in Spanish. Research questions: For these students, is there a relationship between first language ability and second language acquisition? Does greater ability in first language facilitate the acquisition of the second? An analysis of the linguistic measures in the research of this hypothesis reveals a significant positive relationship between first