Student membership is accepted based on what CSF or CJSF advisers and school principals tell us about the level of the courses a student completes. In the past, applications to the CSF and CJSF were not distributed to special-education students. Wright middle schools - the two junior high schools in the district where students can join the CJSF - have about 272 special-education students with minor learning disabilities, dyslexia and processing difficulties.
None of those cities have one kind of language. People in Shenzhen communicate by mandarin, cause its preferential policies have attracted people from various parts of China since 1990s. Local people in or near Guangzhou speak Cantonese while most of newcomers speaks mandarin. It depends on various districts.
Modern Chinese speakers now often learn both their regional dialect and Mandarin to maximize their communication potential. Mandarin is now the official language in China and Taiwan and is used by most of the Chinese schools, colleges and universities, as well as their TV programs, movies, and radio stations. Mandarin is also one of the six official languages in the United Nations. Even Hong Kong schools have begun switching from Cantonese to Mandarin education since around 1997 (when China regained its sovereignty from the U.K.).