Question: how speaking english can improve the quality of education? 

Answer: If I understand your question correctly, you might be looking at it in the wrong way.\n\nFirst of all, many of the most prestigious universities are in English-speaking countries.  So you need to know English to be able to attend those schools.\n\nAlso, as mentioned, many of today's academic documents are printed in English, so you have to know English to have access to them.\n\nFinally, English is a very important language in the world today, so knowing English will help you to get the best jobs after you graduate.
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