In this episode of Progressively Incorrect, Zach Groshell and Bradley Arnold discuss "The Dynamic Tension at the Core of the Grammar of Schooling" by David F. Labaree (@DLabaree). The discussion has us both acknowledging that organizational needs - i.e., what is doable - often prevent large-scale changes to the "grammar of schooling", such as age-graded classrooms, teacher-centered instruction, and a decentralized curriculum.