Standford Working Group says, “One of the best predictors of second language proficiency is proficiency in the mother tongue.”
Why Voting Yes on Prop 58 actually means Better English Acquisition, among other Benefits for…
Jordan Philip Verga

At first I was a little skeptical about this section of your overall discussion. You had this research says and this other research says, but there is no true evidence or name to support those conclusions. I personally can attest for what the research is saying for I have been instructed in both sides of the spectrum; in all one-language setting and the English Language Development program. To me is obvious which one works better because is difficult to follow along an instructor who cannot stop and tell you what she or he is saying.

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