Citation: http://www.straitstimes.com/BreakingNews/Asia/Story/STIStory_818454.html
I laughed at the sentence "the practice is growing despite doubts over its effectiveness".
In Japan, it has been common to be taught by private tutors after school. Some parents seem to be relieved only by leaving their children with tutors. Although this is a problem for the children, private tutors can make their livings owing to those people.
I am one of them, hahaha.