This is a set of STUDENT BOOK volumes 1-6. There is writing in them (e.g., as shown in photos 3 and 4). *Volume 1 has a second copy, and Volume 2 also has a different version, so I'm including them (photo 5) -> a total of 8 books. I think these can be used for NativeCamp and other similar services. The condition isn't great, so please purchase them with the understanding that they are primarily for use as textbooks.