Check out a really cool article on immersion education!
“Brain researchers who study bilingualism believe that the act of juggling two languages strengthens the brain system that helps people pay attention. That strong capacity to focus might be what leads to better academic performance in some children who grow up bilingual or attend language immersion programs.
Canadian psychologist Ellen Bialystok, at York University in Toronto, studies how the brains of bilingual people work in comparison to people who speak just one language. She wires up the skulls of test subjects from both groups to an electroencephalograph (EEG), a device that records electrical activity produced by neurons in the brain. One of the experiments she performs is called the Eriksen flanker task, which measures a person’s attention and ability to screen out unwanted stimuli. Bilingual people generally perform better on the test than monolinguals.”