For anyone who still reads children’s books, I would suggest Diana Wynne Jones. Having only picked up her work as an adult (if you want to call me that) I have no idea how children react to her work. But I find her writing to be enchanting and strangely uncompromising. There are less clichés and more real characters here than many other children's novels. Let’s just say, if I had children, I’d be gently coaxing/bribing them to read her.
By the way why is Morgantown Public Library in West Virginia so much better than all the libraries in Philadelphia combined?