Dual Immersion, or Two Way Bilingual Immersion, teaches school subjects in both English and a target language, in this case, Spanish. The classroom would consist of native English speakers and native Spanish speakers mixed together in each classroom.  Beginning in Kinder, the Dual Immersion Model will be 90/10 (90% Spanish, 10% English.  The design of the program requires that children be submerged in Spanish during most of the day during the early years.  As the program progresses, the portion of the day taught in English increases to 50/50 by 4th-grade, thus ensuring that students are bilingual when they enter middle school.