Till now, we have received 15 years education, and after half and a year, we will graduate from the university. Then does this mean that the education ends? No, when we live in the world, we will never stop learning.
After graduating from the university, some students will step into the society. Someone says that it is the time for them to do better to the society. Yes, it is right. But these students still need to learn. On the one hand, what these students learn in university is just a little. Some knowledge will not be received by them before they step into the society, for it only can be learned in society. For instance, how to deal with the relationship between colleagues; how to do with the relationship between you and your superiors. These are more complex than those you meet in the university. If you cannot deal with these matters perfectly, you'll find it is difficult for you to live in the society. These are societal knowledge. 
On the other hand, the new knowledge and techonology appear everyday. So we cannot stop learning. If we look down upon or ignore the new knowledge, and reject to receive it, we will find we fall behind others. Finally, we'll be eliminated by the society sooner or later.
Some students will still stay in the school to get their Master's and Doctor's degree or go abroad after graduating. Their aims are to learn more or learn something new. And they also should step into the society, and need learn the knowledge in the society.
In one world, education is a life long process. One cannot stop learning for the new knowledge and techonology appears everyday. You cannot stop learning when you die.
