Don't wait for a crisis. Use an evaluation form that's as simple as possible. Jot things down as they occur to you. Don't wait until the last minute to fill out an evaluation. Give everyone a voice.
Several consultants suggest having board members answer essay-type questions on their own.
The board president can compile the consensus evaluation that will be used in the evaluation discussion. Don't punish the superintendent at evaluation time if you're in one of the minority blocs. Remember that the superintendent's job is to carry out the wishes of the majority of the board of education. Don't engage in psychoanalysis or assisn motives to the superintendent. People in education know you should build on children's strengths, remember that adults are just like children.