I wouldn't do it if it weren't for credit
by Scott McLeod
On the great homework grading debate, a teacher says:
"But I want to give them credit for doing it. They did it, so they deserve something for it. I don't think I would do it if I didn't get credit!"
How about making the task something worth doing?

An example from Germany:
The school system is very heavily biased towards marks in tests. This leads to the problem that pupils ask 2 questions every time a teacher begins something new: Will this come up in the next test? or, Will this be marked? If you answer no to both of these questions 3/4 of the class will put down their pens straight-away. This is endemic in all school forms.
This makes it really tough for a teacher who tries to instil a sense of self-commitment in the kids, as the whole of the system is playing by other rules.