Three successful school program models designed to help language minority students conserve the language skills acquired in their homes and continue normal native language development are described. The programs were developed to counteract a trend toward wasting valuable existing language skills and resources. The programs include: (1) an elementary level bilingual immersion program, implemented in four California public schools, in which both native English-speakers and native Spanish-speakers develop academic linguistic and metalinguistic skills in both languages; (2) a secondary level partial bilingual immersion program providing two tracks of formal Spanish instruction, intensive Spanish as a second language and Spanish for native speakers, in addition to traditional Spanish second language instruction; and (3) a program at the University of California at Los Angeles that permits registered Korean American students to enroll in an intensive Korean language program, involving sheltered language instruction in subject-area courses and overseas and off-campus language experiences. The university program is jointly sponsored with Seoul National University. While the programs differ in design, all three support the maintenance and development of linguistic minority students' home languages. (MSE)