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My S's TFs have not taught anything. They've led discussion sections.
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<p>Since TF means "teaching fellow," it's rather sad if they've never managed to actually teach anything during the discussion sections they led.</p>
<p>I attended a liberal arts college where there were no TF's or TA's at all, but I still feel that my classmates and I taught each other valuable things when we were working together in informal study groups. I would certainly hope that marite's son's TF's taught their discussion sections something.</p>
<p>What I assume marite meant to say was that the lectures were all conducted by the professors. But it's worth noting that sometimes the informal teaching that goes on in discussion sections and office hours conducted by TF's can be even more valuable than lectures.</p>
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As for grading, a TF grading 20 exams is going to make fewer mistakes than a prof grading 100+, non?
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<p>That depends on the nature of the mistakes. Probably the TF would make fewer clerical errors in computer and transcription in grading 20 exams, but the TF might well make more conceptual mistakes than the professor would make in grading 100 exams. There might be subtle nuances of the question, judgmental issues that the professor would be able to handle more correctly than the TF, due to his (hopefully) stronger background in the subject.</p>
<p>Actually, if there are 100 exams and five TF's, it's probably more satisfactory if the exam has five essay questions and each TF grades one question for all 100 exams, with each TF getting careful and detailed guidance from the professor on the nuances of his or her particular question. This leads to greater consistency in grading.</p>
<p>And, ideally, the questions can be divided up so that each essay topic goes to the TF most knowledgeable about that area, or more complicated essay topics go to the most senior and experienced TF's, etc.</p>
<p>In the end, I still think the professor has the ultimate responsibility for assigning grades--and ought, at the very least, to do some quality control as part of the guidance process. One possibility is that the professor could read a random sample of each TF's grading work, when the TF is partway through his batch, then give guidance on those examples. (If necessary, the TF might need to re-read the other essays he has already graded in the light of the prof's comments on the random sample, as well as taking those comments into account in grading the rest of the batch.)</p>