This volume presents descriptions of the thirty-seven sites and Title VII projects included in the study designed to determine the impact of bilingual education on students in the cognitive and affective domains in a nationally representative sample of Spanish/English bilingual projects funded through Title VII of the Elementary and Secondary Education Act. The information contained in the descriptions of each project was obtained by the American Institutes of Research (AIR) project staff who visited each site. Data were provided through direct classroom observation, teacher questionnaire responses, and individual interviews with teaching, school and project personnel. Projects and sites are coded rather than identified by name, and a chart is provided to aid the reader in locating projects categorized as to geographical region of the United States, rural or urban setting, the nature of the Hispanic student population served, and the average additional non-district per pupil cost associated with Title VII project students. (CLK)