Step 1: A teacher who gets a particular ranking in year one is likely to get a different ranking the next year. There will always be instability in these rankings, some of which will reflect “real” performance changes.
Step 2: A teacher with one ranking could get a different one next year. Instability with always exist in these rankings, although some will reflect “real” performance changes.
Step 3: Even though a teacher may receive one ranking on year, he or she is likely to get a different ranking the next year. Rankings will always have instability as some of these will reflect “real” performance changes (Ravitch 270-271).
Step 4: The ranking received by a teacher may not be consistent over the years. These rankings are inherently unsound as they are adjusted yearly to express changes in performance (Ravitch 270-271).
Step 5: A teacher’s ranking is subject to change yearly. As Ravitch articulates, “There will always be instability in these rankings” as some will exhibit performance changes that skew the rankings (Ravitch 270-271).
Ravitch, Diane. “Epilogue: School and Society.” The Death and Life of the Great American School System: How Testing and Choice Are Undermining Education. New York: Basic, 2010. 270-71. Print.