Among my schoolbooks, growing up in the early 80s, was what was referred to as a ‘rough book’. This was simply a blank exercise book that we could use for working out ideas, calculations etc before using them to construct a ‘fair copy’ in our official subject books, which would be marked.
Unlike those, rough books were hardly ever glanced at by the teacher in the ordinary course of things. The upshot of that, of course, was that they were quite widely misused and would be used for idle doodles or graffiti, or maybe protestations of love for the latest pop star, during boring moments in lessons.