Two-way Immersion Program Designs: The 90/10 Model versus the 50/50 Model
Salinas, Ivonne L.
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This is a proposed study in which two-way immersion program designs were evaluated to see which program design produced better academic achievement scores, language proficiency, and cultural awareness in students K-5. One of the 2 program designs was the 90/1 0 model, in which 90% of the class was given in a second language, in this case Spanish, and 1 0°/o of the class was given in English. The second program design was the 50/50 model, in which the class was conducted half in Spanish and half in English. The hypothesis was that students in the 90/10 model would have better academic results and language proficiency on the standardized tests given than the students in the 50/50 model. The participants were 200 California students, 100 of the minority language, and 1 00 of the majority language. They were randomly assigned to 1 of the 2 models and participated in them for six academic school years. After each year, but specifically the sixth year, test results were evaluated to see which program design produced better results overall.
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