The basics of peer evaluation by Dr Jim O’Connor.

Because teaching is a multi-dimensional job,
assessing what we do as teachers requires a
multi-faceted approach. No single instrument can
capture all aspects of any individual style or method
of teaching. Student surveys, for instance, can
measure whether student perceptions of what we
are doing are aligned with what we ourselves think
we are doing; but assessing our teaching requires
more than consumer impressions.