This final report relates to student socialization through a bilingual (Spanish/English), bicultural program involving 6 second grades in 3 schools of Phoenix, Arizona, for the 1970-71 school year. As reported, the major objective of the program was to develop and implement a group process approach to bilingual education; in addition, classroom instructional personnel were trained by site coordinators. Program success was regarded as outstanding in classrooms having strong administrative support for the program; partial success was achieved in overall efforts to create classroom enviroments and appropriate activities to facilitate small group interaction. The relatively unsuccessful aspects of the program were attributed to lack of (1) bilingual teachers, (2) a true heterogeneous student population, and (3) supporting administration. The document contains discussions of program rationale, the group process approach and procedures for implementing it, training and research procedures, and bilingual and bicultural activities; results, evaluation, a summary, and recommendations are also provided; and appendices include tabular summaries of the training evaluations, a checklist for program classrooms, noted reactions to various program components, results of analysis of variance for the Peabody Vocabulary Test and the Artola-Stewart Spanish-English Vocabulary Test, selected language samples, a composite of the parent questionnaire; a description of the teacher's manual, and the Natural Method of Language Acquisition Checklist. (MJB)