Wasting Paper

I realise that the people in my school like to waste paper. Even a small document is printed on one piece. Then, when it's not right, they ask us to reprint again. ...........................:x Reprint and reprint and reprint, non-stop like we are paper producer. Printing out all the scrap books, folio and etc also the same. Just imagine what is going to happen if one person in the class prints out 20 pages and in a class with 40 students, there will be 800 pages. 800 pieces of paper wasted per day. No one actually realise this.

Every printed assignments that have been handed in will somehow enter the recycle bin or into the dustbin. Isn't that such a waste?