An evaluation of the effectiveness of the English language training for Navy recruits at the English Technical Language School (ETLS) in Puerto Rico is reported. The study covers the period of December 7, 1981, to September 30, 1983. It tracked Puerto Rican Army National Guard (PRANG) personnel from completion of English language training through initial military training and fleet assignment. The report's contents include background information; descriptions of the ETLS and Navy recruit training programs; training evaluation data, including language proficiency examinations, recruit data, length of training, developmental training, and the company commander/instructor commentary; analysis of existing and alternative program costs; and conclusions and recommendations. The ETLS program's effectiveness was found to exceed the short-term Hispanic recruiting goals, and a long-term and positive impact was found even in the negative political climate of the location. Recommendations include program admission limitations, upgrading of facilities, criteria for personnel assignment, continued monitoring of English language trained personnel, and periodic economic analysis. Appendices include a memorandum of understanding between PRANG and the Navy, personnel and recruit data, standard operating procedures used at ETLS, the program of instruction, mission and curriculum outline, tracking system information, and summaries of commander interviews. (MSE)