I've been retired for 12yrs ... But doubt there has been a lot of change from my experience which is: yes, it is possible for there to be a large difference between the school awarded to and the Diploma exam result. Could be lots of reasons for the differences for an individual student, but the two most likely suspects would include the "exam panic" theory.... And second, the possibility that the teacher structured in-school marks to include a greater emphasis on evaluations like essays, participation, etc ...rather than in-school tests...which generally produce a higher correlation between the school issued mark and the diploma exam mark. As principal, I always encouraged staff to structure course evaluation in such a way that there would be a high correlation between the school submitted mark and the diploma exam expectation... Recognizing the reality of post secondary admission policy. For what it is worth, the high school I administered always ranked in the top 20 percent of Alberta Schools by the Frazer institute.
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