You are not teaching language, you are just teaching the grammar and expecting us to know all the words you haven't even mentioned. Moreover, putting people in leagues is not a good idea because whenever I didn't have enough time to study and down to other league, I feel stupid. In addition to those problem, some Users are getting incredibly high scores that I am still struggling to understand how they are getting this much points. So your status degreased from 5 to 1.