Since then, French immersion has spread across the country and has led to the situation of French immersion becoming the most common form of language immersion in Canada so far. According to the survey by CAL (the Center for Applied Linguistics) in 2011, there are over 528 immersion schools in the US. Besides, language immersion programs have spread to Australia, Mainland China, Saudi Arabia, Japan and Hong Kong, which altogether offer more than 20 languages.