In 1985-86, Project BITEC provided bilingual instruction and supportive services to 379 limited English proficient (LEP) students from Italian, Chinese, Vietnamese, and Latin American backgrounds at New Utrecht High School (Brooklyn, New York). The project aimed at enabling its target population to master the English language as soon as possible, continue their education in content areas through bilingual courses, and gain vocational skills. BITEC offered courses in English as a second language (ESL); bilingual instruction in mathematics, science, and social studies; and courses in industrial arts, secretarial studies, and computer technical studies. This evaluation found that: (1) significant gains were made in English reading achievement; (2) students achieved a 70 percent passing rate in native language arts courses; (3) overall, the percentage of program students passing teacher-made examinations in mathematics, science, social studies, and secretarial courses in the spring semester was equal to or greater than that of mainstream students; (4) program students surpassed a 70 percent passing rate in computer programming, typing/steno/word processing, and electronics, architectural drafting, and advanced building trades; (5) program students had a higher attendance rate than mainstream students; and (6) the dropout rate of program students was not significantly lower than that of mainstream students. (PS)