The difference between primary and secondary is very different because there are many causes that need to be changed as more responsible. The beaming to increase and so on.
The difference between primary and secondary education is very different because there are a number of things that need to change, for example, that there must be more responsibility. The kratue rumor to overflow.
The difference between primary and secondary school was very different because there are several reasons why the need to make changes, such as the need to have a responsibility for the more actively to spread the overflow must be increased.