How do Level 1A and 1B work?

Go Far with Chinese Volume 1 would most likely be used for one school year at a high school level. Not all schools may be able to complete the book in one year, especially if students start learning Chinese in middle school. For these situations, the material in volume 1 is also offered in two parts, letting teachers use volume 1A the first year and volume 1B the second year. The material covered in volumes 1A and 1B is the same as what is in volume 1 with the exception of a review unit at the beginning of volume 1B that can be used to refresh the students’ memories of what they learned in 1A after coming back from summer break before starting new material.