Ithink that simplified english no always useful, because fristly, with simplified version you can't find job in international company, where require perfect knowledge the language. secondly, many people no understand simplified english, that' why will be hard chat with foreigners. in third, people must save their cultures and history. if the students will be teach simplified, they will not be able understand movies, books and song. проверьте, obviously, it's reaaly no good the variant english. he little where can need, but it's better than know nothing.
is required
knowledge of the language
people don't understand
Вместо that' why will be hard chat было бы лучше написать that is difficult to communicate
Thirdly
must означает очень строгое долженствование, как закон, возможно, в данном случае лучше использовать should
their culture
If students teach simplified english, they will not be able understand movies, books and songs.
Не могу понять, что вы хотели сказать последними двумя предложениями