By Erik Day and Michelle Berkeley Project-based learning is one of the most promising and scalable strategies for enabling deeper learning available to most schools across the nation. Particularly when centered around extended challenges, PBL helps students develop skills and mindsets that will serve them for the rest of their lives. When supporting and sequenced within a competency-based progression model, PBL holds further promise for engaging students in relevant, authentic experiences that help them progress meaningfully and reach higher level…