As the competition of modern life becomes increasingly fierce, parents use kinds of tactics to motivate their children to study spontaneous and strive to get a high mark. Among all these tactics, money incentives has induced a heated discussion. As young children  are curious about new things and want to purchase the latest device, money may work as an impetus to push them. And totally I agree on the method that parents give children money as a reward for getting a high mark.
From the students point of views,it is a great motivation that we can get a little money if we  get a higher score.This money although not a large number is the approvement for our efforts.To my own experience,my parents always take this measure when I lose the passion to go to study and mostly it works.Everytime,I get tried,I would like to think about the things that I can buy after getting the award,then I were filled with energy.
However,some people stand on the opposite side that perfer to active studens in another way.Having a one day trip to museums or national parks is a contracting way,for instance.In this way,parents will not only have more time playing with me but also enjoy a relaxed time  because they are so busy and stressful at work days. 
In conclusion, using money is a good way as a payback for the students hardworks.