Why does Mr. Gill keep an empty chair in the front of his classroom? Find out in this poignant picture book based on a true story that celebrates a beloved teacher and his commitment to making sure all kids feel welcome. From art to science, history to math, there are so many things to learn at school! But Mr. Gill's students are most interested in learning about the empty chair that sits in the front of their classroom. He tells them a story from his childhood about his Black best friend, Archie, the racism they experienced at a classmate's birthday party, when Archie was told there wasn't a chair for him, and how it inspired Mr. Gill to prioritize inclusivity and love. In this true story of bravery and belonging from longtime elementary school teacher Dan Gill and gorgeously illustrated by Susan Gal, readers will learn to always keep an extra chair in their home and in their hearts.