I was explaining some of the delineations in writing YA versus MG versus adult books on a list I'm on and thought it might be helpful to post here as well.

Middle grade are emphatically kids books, ones written for kids about kid-like experiences. They can touch on tough things and sad things, but once it touches on anything very dark, it automatically becomes YA. There is a very strong protective bubble around middle grade stories.

Because middle grade books are short 20,000-45,000 words...