From The Mixed Up Files of Middle Grade Writers:
There’s something very appealing about this audience. They’re old enough to understand humor and even sarcasm (in fact, some eleven-year-olds I know are Kings and Queens of Sarcasm). By age nine, many children have mastered the mechanics of reading and they’re ready for challenging new vocabulary and themes that stretch their minds.
Read more at The Mixed up Files of Middle Grade Writers.
Image source The Mixed up Files of Middle Grade Writers.