A review of 35 reports evaluating 27 two-way bilingual education programs is reported. All programs represented meet basic criteria for language of instruction, student characteristics, and emphasis on developing bilingualism. The review examined program characteristics and student outcomes, when available. Results are summarized in the following areas: language proficiency in Spanish, English, Chinese, and Portuguese language proficiency; Spanish and English reading achievement; Spanish and English writing achievement; Spanish and English math achievement; Spanish and English science achievement; Spanish and English social studies achievement; additional content-area results; student self-perception and language/cross-cultural attitudes; staff development activities; parent involvement activities; and teaching methodologies and classroom strategies. Contains five references. (MSE)