An evaluation was done of New York City Board of Education's Project Language Development through Holistic Learning--Mathematics, Art, Science, Technology, and Education Resources (Project MASTER). The project offered instruction to 344 low-income, Spanish-speaking students of limited English proficiency in grades 3 to 5 at 5 elementary schools in the Bronx. Students received instruction in mathematics, science, arts, and (at some sites) computer skills. Instruction was integrated with English language learning through the medium of science projects. Project personnel anticipated that the hands-on approach used in the science projects would encourage critical thinking. The evaluation found that the project was fully implemented. Students developed skills in English as a Second Language (ESL), science, arts, mathematics, and the use of computers. Scores in ESL, science, and mathematics all increased significantly. The program included staff development, curriculum development, and some parental involvement activities. In addition, the project met its objectives in ESL, mathematics, science, and staff development. As the project did not provide data on parent involvement, that objective could not be assessed. (Author/JB)