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The DI program in Long Beach Unified School District was started twenty-five years ago and has deep roots. Keller Middle School is the only middle school (grades 6-8) to offer the continuation of the school district's K-5 DI option.  Dual immersion involves learning in two languages, in this case, Spanish and English. Ideally, classrooms consist of about half and half first-language English speakers and first-language Spanish speakers. DI is not merely a Spanish class or two added to the curriculum. Core subjects and electives are taught in English and Spanish resulting in students achieving high levels of bilingualism and bi-literacy. DI students also demonstrate positive attitudes and behaviors towards other cultures.