It is bad as most of the books are still in a good condition and can be used by the next batch of students which will reduce the pressure the pressure on the resources of the nation and can reduce waste to a great extent.

hope it helps

It is a bad thing . We shouldn't throw our books after final exam.They are very valuable till our death . We can also give those books to the poor children . But we shouldn't throw the books .We know that there are number of trees involved in making of a ton of paper. So,if we recycle the paper we could save a number of trees .So,stop throwing books away and try to restore them.