Herman Melville for writing Moby Dick ,Jack London for writing Call of the Wild , Wendelin Van Draanen for a load of books and finally my favorite writer for School stories is Andrew Clements.
I like classics and other books , and the above Authors are very skilled writers and very favored by me.
Franz Kafka is really great, I especially love his Metamorphosis book/short story collection. Although I have a lot of favorites I'd probably have to say George Orwell with such great satire in his books including 1984 and Animal Farm, I think he's a real great observer of the Soviet Union's practices.