The education students deserve starts with great and diverse teachers. But while many states have made impressive progress on diversifying the teacher workforce, that progress could be at risk. This is because school districts commonly use seniority--"Last In, First Out," or LIFO--to determine which teachers to lay off. But LIFO is not colorblind: Early-career teachers are more likely to identify as people of color, and thus most likely to be let go. This report, written with Educators for Excellence, explores the potential impact of LIFO in the context of the COVID-19 pandemic. It includes analysis of new state teacher workforce data, as well as specific ideas for how states and districts can replace LIFO with policies that protect teachers of color. "So All Students Thrive" shows the urgent need to retain these educators and offers solutions for making sure our schools do so. Our students' futures depend on it. [This report was produced with Educators for Excellence.]