Dialect has been thought to be a non-standard, discourteous language. However recent investigations show that there are lots of positive aspects in Korean dialect. Most of all, Korean dialect has more expressive capability than standard Korean in that dialect often has words having no semantic equivalents in standard language. It tends to use more native words than standard language which favors Sino-Korean or foreign words. Therefore if Korean dialect gets a chance to be taught in school, young Korean generation can learn the following facts. (1) Even though one speak in dialect in capital city or other places outside of his or her native area in Korea, he or she doesn't have to suffer from an inferiority complex. For every dialect as well as standard language has its own system and equal value. (2) Because a dialect is a mirror which reflects culture of a region, if one learn the dialect, he or she can understand the mind, culture and people of the region. (3) A dialect is a marker of the community by which members of the community can tell themselves from other people. Therefore the best way to touch hearts of the members is to communicate in the same dialect. (4) Misunderstanding from dialectal difference sometimes creates emotional conflicts among the speakers of different dialects, which could be settled easily if one had a knowledge of the dialect.