I wanted to answer you. You asked me how can you learn English if you haven't got time for it in your programe. Please tell me your programe in your next letter.
If you start the school in the morning, you can learn some new words after you do your homework. The same thing if your lessons start in the after noon. But I understand it's harder for you to learn if you are in class 5,6,7 or 8. But I'll give you an another recommendation: in your free time, speak alone in English(it's perfect if someone in your family can talk with you in this language).
That's all I know to help you. Write me soon!!!!!!