Children don't have to study during summer vacation. Most adults think children have to study during summer vacation because most children usually don't study anything without school. But I think it is wrong. So I will explain it. I think children don't have to study during summer vacation. I have two reasons. First, we should think about children's happiness. If children study hard every time, they can get the high score in school. But children need not the high score but more experiences. To play with friends is more effective to make their life better. Second, we should think about teacher's workload. Japanese teachers don't have time enough to play their own children because they are too busy. They have a lot of tasks every day.They have their own family as well as us. So I think children don't have to study during summer vacation and they have to play with friends.