Too often, shared visions really mean, "I have a vision; you share it!"
Too many professional development initiatives are done to teachers - not for, with or by them.
The most important emotion in classrooms is surprise.
Strong professional communities risk and sometimes relish conflict.
One or two bad teachers is a problem with the teachers. A school with many bad teachers is a problem of leadership.
If one foot is in a bucket of steam, and the other is in a bucket of ice, you are not, on average, comfortable.