The problem seems to be that English teachers do not teach children to apply English to their daily life. Students study about vocabulary, grammar rules and do the exercises. They study English only in the classroom after finishing school they have less chances to use English so, they do not realize the importance of language and they will forget what they have learnt in the class. Moreover, English language seems to be looked down as a supplement subject that is not as important as science or mathematics. As you see, students have two classes about an hour per class to study English per week.
Tanawat 4EN 059