Math lesson time. Math scores: Manitoba, 468; Yukon, 469; Newfoundland and Labrador, 472; Nova Scotia and Saskatchewan, each 474. That's five provinces within 1.2 percentage points of each other. Put another way: Billy got 80 per cent on his test. Sally got 81 per cent on her test.
Math lesson, part two: The creators of this test, the Council of Ministers of Education, rightly points out that the margin of error on these scores is greater than the differences in these scores. In plain English, that means that the statisticians who crunch the data are saying that the scores are basically equivalent.