Teachers may believe that their measurement abilities are strong,
and they receive little feedback to the contrary. If two teachers, one
strong and one weak in measurement skills, each develop and administer
a test to their students, each teacher will acquire a set of test
scores that does not appear to differ from the other set. As long as
each teacher believes that his or her test is reliable and valid, the two
teachers may be equally comfortable with the resultant scores. There
appears to be no mechanism in the schools to provide feedback to
teachers on the quality of their measurements and assessments. In the
absence of feedback, beliefs may playa major role.