Hey dear, 11th and 12th class are very crucial year's as far as academics of a student is concerned. One can work hard during these two year's or he has to work hard ahead in his life. When you come to 11th everything in academics changes and there is vast syallbus, initially student faces difficulty, but at that moment he has to make his routine of study so that he dosen't face the same problem ahead. So, i would advice ypu to study smart in these two years an there will be many options open when you pass them with good marks.