Reading nonfiction has been shown to increase fluency, boost comprehension, and expand students' worldviews. The selections in this nonfiction book list offer an appropriately leveled challenge for advanced readers in Guided Reading Levels W-Y, and cover high-interest topics like the Civil War, the Titanic, severe weather, and more. They're perfect for introducing students to all different types of informational texts such as memoirs, biographies, and historical narratives, and for boosting literacy skills along the way.