Learning English has many problems is that children can't read, write, listen, don't know the meaning of words and don't dare ask the teachers because they shy friends. Children can't learn along with the teachers,who teach. The development of the child is to live with that.
In one sense, the children may understand only in the classroom. If not repeat the lesson,children will gradually forget and must learn new again.
And now there are lots of electronic media. Most children have to stick together a lot of phones. In a time when learning to play the phone makes it impossible to concentrate in school. Don't listen to these problems, teachers, children's learning progress.