Have you ever considered writing to a specific audience outside of the norm?
An author can sit down and write for a specific genre (i.e. science fiction, fantasy, and general fiction), age group and topic.
What about writing for those kids who are reluctant readers? Kids, who have trouble reading at their level, but want to learn about topics for their level and specific to their age group.
Books for reluctant readers have been dubbed by publishers as high-interest, low-reading-level, or hi-lo books. They are written not only for the middle-grader who has trouble reading at a first-grade level, but also for ESL students and adults, or university students with learning disabilities.