Despite the norms of privacy that pervade teacher culture and the assumptions of behind-closed-doors independence, teachers actually "need" their colleagues, whether they like it--and them--or not. Teachers are inherently dependent on one another since no one of them alone constitutes their students' education. Students move from teacher to…

In 1973, the founding administrator of a Long Island high school proposed adoption of a student advisory system, team teaching in the humanities, and no academic department chairs. Convinced that having chairs diminished teachers' stature, this principal successfully encouraged teachers to work together to develop curriculum, prepare budgets, hire…