According to New Oriental Online official website, New Concept Youth Edition 1A is suitable for primary school students in grades 3-4, with 58 class hours in one class. 1B is suitable for pupils in grades 4-5, with 30 class hours in one class and 30 class hours in New Concept Youth Edition1b. New Concept English Youth Edition is a set of teaching materials specially designed for teenagers to learn English, which is suitable for students aged 1 1- 16.