Yes you can say it like that, but it is not very natural and entirely clear what you mean. If your Chinese students are exposed to a bad English learning environment. Such as being taught English by London or New York Gangsters and criminals. Their English will become peppered with language that is not desirable to learn for a University, College, School, work, job, visa, resident application etc.
They should be exposed to a good standard English teaching environment. It does not matter if it is American or any other English. once they have a foundation. it takes only days and less than a month to learn the new nuances if they decide to move to another country.