Our education system has been the old gurukulam system of education wherein the student stays with the teacher for some years to learn. But after the arrival of the British, the education system went a total change. They occupied our country and wanted our people to serve them, so they introduced the present education method we are following. On one aspect they introduced English the new language but ensured that we are useful to serve them. So though we learnt and knew English we were not allowed to think on our own or allowed to ask questions.
The question is at the root cause of the Indian Education System. What we here follow is blind acceptance of answers either already given in the textbook or dictated by the teacher or copy from the ready-made guides. We as students are taught not to ask questions from day one of schooling, unlike the western education system. Not only our parents followed them, but they also do not find time to encourage or cultivate the habit of asking questions.
First unable to answer embarrasses them, so they tell their kids to just follow what is being told. Second, they are interdependent on society so they are forced to follow the rat race to recognization
So knowing basic English, being mature is not enough for studying by yourself. it goes beyond that. It requires self-discipline, practice to search and find answers for questions and a guide or mentor who has gone through the same and is willing to impart it to a student. These are followed in higher education and only in some institutes of repute.