This article on the CARLA website is about where to find the results of a 1994 questionnaire that was mailed to 140 immersion schools in the U.S. to collect information about the language immersion program, language use, the big picture, developing curriculum, learning in non-school environments, and expressing cognitive operations through the language of immersion.
This article describes what the Language Immersion Program is (specifically talks about spanish), how it is beneficial, what the drawbacks are, research studies, and how children are effected by using the program. The author's opinion is clear, so in her whole article she has a slightly persuasive tone and she makes the program look and sound amazing to probably everyone who reads it. There is some good information about the program and some research studies, and the benefits/drawback are very interesting.