In 2015–16, 40 or more states reported teacher shortages in special education, mathematics, and science and more than 30 reported high levels of shortage for teachers of English learners. Shortages are particularly severe in schools serving low-income students. Widespread shortages have resulted in increased class sizes, reduced course offerings, and students being taught by substitutes or other under-qualified instructors. And they're not going away: Shortages are projected to grow due to declines in teacher education enrollments, student enrollment growth, and high attrition rates. In this Twitter chat, LPI teamed up with the Center for Teaching Quality and our partners in the Twittersphere to discuss the nation's teacher shortages and evidence-based approaches to solving them.