Illustrious Professor

When a story is written with a child or children in mind, one which may be read to them or which they will read, to the question "Who is it for", "Whoever!" is not a fair reply. To questions about their age or reading age, "No particular age in mind! would again suggest a question avoided.But, in every case, there will be exceptions: for chronological age, for reading age, for degree of literacy, ...