Step 1. There will always be instability in these rankings, some of which will reflect \u201creal\u201d performance changes. But it is difficult to trust any performance rating if the odds of getting the same rating next year are no better than a coin toss.
\nStep 2. If the odds of getting the same rating next year are no better than a coin toss, then it is difficult to trust any performance rating.
\nStep 3. Thus, a teacher who has comparatively ranked at the 43rd percentile may very well be anywhere between the 15th percentile and the 71st percentile (Ravitch, 270-271).
\nStep 4. The inherently unpredictable framework of existing ranking systems does not invoke confidence in raw performance rating data (Ravitch, 270-271).
\nStep 5. According to Ravitch, using students\u2019 test scores as the definitive indicator of a teacher\u2019s skill is highly unsatisfactory as, \u201c\u2026the estimates of value-added and other \u201cgrowth models,\u201d which attempt to isolate the \u201ctrue effect\u201d of an individual teacher through his or her students\u2019 test scores, are alarmingly error-prone in any given year (Ravitch, 270-271).\u201d
\nOriginal source: Diane Ravitch, The Death and Life of the Great American School System (New York: Basic Books, 2011), pp. 270-71.<\/p>\n","protected":false},"excerpt":{"rendered":"
Step 1. There will always be instability in these rankings, some of which will reflect \u201creal\u201d performance changes. But it is difficult to trust any performance rating if the odds of getting the same rating next year are no better than a coin toss. Step 2. If the odds of getting the same rating next … Continue reading Avoiding Plagiarism Exercise<\/span><\/a><\/p>\n","protected":false},"author":748,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[60],"tags":[],"_links":{"self":[{"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/posts\/5326"}],"collection":[{"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/users\/748"}],"replies":[{"embeddable":true,"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/comments?post=5326"}],"version-history":[{"count":1,"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/posts\/5326\/revisions"}],"predecessor-version":[{"id":5340,"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/posts\/5326\/revisions\/5340"}],"wp:attachment":[{"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/media?parent=5326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/categories?post=5326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/commons.trincoll.edu\/edreform\/wp-json\/wp\/v2\/tags?post=5326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}