But, we don't know what this means. Is it that they chose the same wrong answer choices? Wouldn't that be possible if they had the same teaching? Or does it mean they got the same questions right or the same score? Or does it mean that the majority of their answers we're the same (which is the most suspicious but still jot evidence of cheating)?
I agree. I saw one non-Col. Conf posting on the internet where it really sounded, to me,as if the kid was guilty (got a 32? or 34? the second time but has straight Bs in school and refuses to retake the test). It sounded like, in that case, the student was notified in a timely manner and would have time to retake it close to the original tutoring.
Also, the higher the scores, the more answers kids are going to have to have the same, just because 2 people getting a perfect score will *have* to have 100% the same answers, no? Now, for the kids who get accused with a score of 25, yeah, that'd be plenty of answers wrong to be able to say, hm, that's some statistically unlikely number of answers the same, but, with the huge numbers of students taking the tests, some kid somewhere is likely to have a statistically unlikely number of answers the same as some other kid they're sitting near, just because of the big numbers. And, like you said, being taught by the same teacher. Not that I'm saying all these students are necessarily falsely accused... odds are some aren't, but we don't know which, and, we have too little info.
Getting a really high score while being a B student isn't that odd... some kids just slack in school and have a "good enough" kind of attitude, while being bright enough to score really high on a test that doesn't require studying for (like, you won't do well on say, a biology test in school just because you have some kickass reading comprehension, but you can score high on the SAT/ACT that way). The main thing I'm thinking is that it'd be weird to be a B student in math while scoring really high on that on the test, but if the school is making a large part of the math grade based on homework, I could see that too with a bright kid who just never does the homework and/or never hands in the homework.