They were discussed by the entire board. It wasn't done by a small committee of the board. The small committee might have prepared the initial documents.
I can remember very well that I was asked to leave the room when they discussed my evaluation. I left the room and I was later shown the evaluation. I had no problem with it. They were free to make whatever evaluation.
I might say, too, my evaluation was positive every year, so of course, having seen it, I didn't have too much to disagree with.