Even though it is more objective than the current one, which is based
on classroom observations alone, Friedman maintains that teachers still could be wrongly targeted on subjective grounds.
When the performance of the three groups
on the
classroom observation test was contrasted using an ANOVA, F (2) = 2.822, p =.067, the probability that the mean differences were due other than to chance
alone, with alpha of p <.05, was not considered significant.