It's not about how many people know basic English -- it's about the code in core Osclass that doesn't work. Osclass supports multi-language feature and most of the text can be translated without any issue. But In some parts of the website, you have properly translated date, and in some other parts you don't. This really spoils the effect of having a professional website -- when a user visits that website, he probably will leave when he sees partially translated page, and move to some more professional page.