This is the research to re-structuralize elective subjects which `Presidential Advisory Council on Education, Science ＆ Technology` suggested. They intended to develop students` core capability through re-structuralizing of high school curriculum. The main topics of this research are as followings. (1) What is the ground of combination between `Reading` and `Grammar`? (2) How change the content`s frame and details of `Grammar`? (3) What is the standard to divide `Grammar` into two parts? As to first topic, we explained that Grammar also needs `understanding characteristic` the same as Reading, reading texts are able to be supported for Grammar learning and Grammar can make analytic and structural reading. About second one, we analyzed grammar curriculum from seventh curriculum to 2009 revision curriculum and ascertained that Grammar`s focus is changing from `knowledge and understanding` to `using based on knowledge understanding`. Regarding third one, `Grammar Ⅰ` has core knowledge of grammar and stress language activities. `Grammar Ⅱ` put emphasis on normative grammar and identity of grammar.2009 Grammar curriculum as the elective subject is combined with Reading and focused using in real life.