Knowing English is one thing. Speaking it is something different. To speak valid English it's necessary that you know intermediate level at least, AND that you complement studying Figured Meaning Languaje (FML)because the institutes DON'T teach it. No FML NO internationally valid English, because FML is the English in real life, and so very necessary to sepak it. English in real life is different from English in academy. Additionally, it’s necessary that you practice alone. Practicing with a partner or instructor gives very little gainance, and it takes a long time (years and years). I have the FML course and the short-time practice program at home for free (2 MONTHS). Ask me for more information: princeton_cusco@hotmail