7 Hypothesis Three Students who utilize English communication opportunities will make more progress in mastering English as measured by ethnographic means than students who do not. Research question: Are there measurable behavioral differences which can be observed in the school environment that distinguish students who score higher on standardized written and oral tests from students who score lower on the same measures? Del imitations This research has been limited to the Cuban students who arrived in the U.S. between the months of April and October 1980 and who were enrolled in one junior high school in a county in south Florida. Included in the formal student interviews and oral language sample phase of the study were 41 seventh and eighth graders--!9 males and 22 females. These 41 students and 39 of their parents participated in the survey phase. Four parents participated in the formal parent interviews. A total of 63 Cuban students--the entire enrollment for this junior high school--participated in the written language tests and informal interview phase of the research. Formal and informal interviews were conducted with 15 teachers, 6 administrators, 8 aides and other staff, 41 students and their parents, and 15 other students at the school where the study was con ducted. Merchants and others who work in the corranunity where the re search was conducted were also interviewed, as were other Cubans and Cuban-Americans from earlier immigrations who had settled in the