"The buck stops here" is literal. When a teacher leaves in tears, when a student fails to get into college, when the roof leaks during an inspection—the Headmaster eats the criticism.
A Headmaster cannot complain to the staff (it undermines morale). They cannot complain to the board (boards can fire Heads). They cannot complain to the parents (parents see the Head as the solution, not a peer). Consequently, they carry the weight silently. Headmaster
We are already seeing a shift toward . The lone "Great Man" theory is dying. Future Heads will likely share power with Lead Teachers and Student Government. "The buck stops here" is literal