This paper aims to classify the types of Korean grammar education items in terms of grammar functions. Among the Korean grammar items, there are many types of complex forms that are not handled well in Korean linguistics or Korean language education for native speakers. These complex forms have been categorized as ‘expression’ categories and distinct from other grammatical items. Thus, there is a problem that items having the same grammatical function are classified into different types. However, the grammatical functions of ‘expression’ items are not different from other grammatical items. On the contrary, there are more advantages in classifying all types of grammar education items, focusing on grammatical functions. Classification of grammatical items should be in accordance with the purpose of Korean grammar education. From this point of view, classification according to grammatical functions is more valid than classification based on differences in formal composition.. (Sogang University)