Language is the mode of communication and we use it daily to communicate with various people for different purposes. That is why it is believed that if you are not really proficient in the local language of the place where you want to study then you will not be able to understand what teachers are teaching, hence, you will not be able to perform well which will lead to unsuccessful education and career. However, in this modern world most of the countries have English which is the global language as one of their official language for all the purposes, therefore if you are aware of this one language then you can easily study in many countries as there are very few countries which do not fall in this category. Also, you do not have to be too proficient in English, if you are a decent user of the language, you will not face any challenge.