Lexington Institute - Immersion Not Submersion: Converting English Learner Programs from Bilingual Education to Structured English Immersion in California and Elsewhere
Excerpt: "Many people resistant to immersion hear about one-year programs and declare that students can't possibly become fluent in English in a year... But studies have clearly shown that students can learn enough in a year to understand English-only classrooms."
Lexington Institute - Immersion Not Submersion, Volume II: Lessons from Three California School Districts' Switch from Bilingual Education to Structured Immersion
Excerpt: "California made headlines across the country when test scores were released after the passage of Proposition 227. Opponents of the law had predicted it would spell disaster for English learners. But quite the opposite occurred."
Lexington Institute - 10 Reasons Why It's Important to Learn (and Teach) English
Excerpt: "Language minority 18- to 24-year-olds who speak English very well were nearly three times more likely to have completed high school than those who do not (51 percent vs. 18 percent). They were also more likely to be enrolled in a postsecondary institution (28 percent vs. 37 percent)."
American Legislative Exchange Council - Bilingual Education Reform
Excerpt: "In the first three years after California voters passed Proposition 227, effectively eliminating bilingual education and replacing it with structured English immersion, English learners in grades 2 through 8 demonstrated consistently strong gains in reading, math and language skills."

