Subject or not?

I read a book last week, the book's title is 「日本の小学校英語を考える」. This book is considered English education in Japanese elementary school from the points of other Asian country and area(Koria and Taiwan) . I was suprised because in Koria and Taiwan, differ from Japan, English education has been introduced as a subject in elementary school. I want to deliberate whether English education in Japanese elementary school should be change English activities in "SOUGOUTEKINA GAKUSYUNOJIKAN" into one subject fomally, as well as the two country and area.