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All elementary school dual language programs, regardless of the population, use the partner language (the language other than English) for AT LEAST 50% of the instructional day.

There are two basic models:

Full Immersion (90/10): In two-way and developmental bilingual programs, the partner language is used most or all of the day in the primary grades (80-90%). Foreign language (one-way) immersion programs that implement the full immersion program use the partner language for 100% of subject matter instruction, and in some cases, also offer specialist classes in the partner language. In all cases, the partner language and English are used equally in the later grades.

Partial Immersion (50/50): The partner language and English are used equally throughout the program.

Example of a 90/10 program

Source: National Dual Language Consortium

(National Dual Language Consortium

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