And what part of my comment, jimhale, suggested to you that I have "nativist attitudes"?  Or that I might believe immersion program students are failing at anything?
Are you suggesting that those students that struggle with reading, writing and math are struggling because they're not in a language immersion program?
Are you suggesting that Oregon's near bottom in the nation graduation rate is because most students are not in a language immersion program?
Our school systems owe all students, and we pay taxes so all students learn, the basics of reading, writing and math (along with history and civics), and get their high school diploma. So they can begin to compete in the international jobs race.
As our country is dragged, kicking and screaming, into a global society and economy, second languages (and third and fourth languages) will become vital for it's survival. 
But it doesn't matter how many languages a student speaks; without a high school diploma, most are going nowhere.