<p>There are even discrepancies in STEM grading at elite schools that may be unfair if you look at it between institutions. For example, I imagine the following demonstrates the common practice at Harvard (it’s from organic chemistry 1, chem 17):
<a href=“http://isites.harvard.edu/fs/docs/icb.topic633039.files/Lecture1-CourseIntroduction.pdf[/url]”>http://isites.harvard.edu/fs/docs/icb.topic633039.files/Lecture1-CourseIntroduction.pdf</a></p>
<p>Okay, so in this particular class, the mean is curved to “B”. This is a traditional elite school large science course situation where the instructor designs exams that are extremely difficult and thus must fit grades to a curve because applying to a normal “90%=A grade” scale will result in most people failing (65 would usually be a D). So…what happens when you have other schools with extremely rigorous organic chemistry sequences such as Dartmouth, Emory, Brown (this one definitely curves higher), Northwestern, and maybe Stanford (okay Stanford may also curve to “B”) deciding to curve to “B-” and even “C+” (both in the 2s). Is Harvard’s extra bump justified because it’s students had a harder time getting in? </p>
<p>I mean, it shouldn’t matter…</p>
<p>Just take a look (for those familiar with science/chemistry courses), I went to Emory and the exams given by some instructors who curve to B- and yield about a 65 average are quite a bit more difficult than the ones for chem 17. I’ll show you (the material is different, but you’ll be able to tell by the format that the exams from Emory are conceptually more rigorous and have significantly more rigorous “curve-ball” questions whereas the Harvard exam seems to primarily problems that can easily be done if you just understood what was presented to you in class. The exam I present requires much more “luck” and “depth” because the concepts are completely foreign to the students. Exams are usually up to 3 hours long).</p>
<p>For ease of direct comparison, know that Harvard’s chem 17 is a crash course in carbonyl and what is typically second semester chemistry for pre-meds (who will go on to take chem 27 which is a “bio-organic” type of course). I will compare it to the 2nd semester of our sequence since it’s most similar (I would compare our 1st semester to chem 20, but they only have a summer coursewebsite available, and I don’t think it’s fair to compare summer to semester): </p>
<p>Harvard chem 17 Exam 3: <a href=“http://isites.harvard.edu/fs/docs/icb.topic633038.files/Exam3_2009_actual.pdf[/url]”>http://isites.harvard.edu/fs/docs/icb.topic633038.files/Exam3_2009_actual.pdf</a>
Emory chem 222 Exam 3:
<a href=“https://docs.google.com/file/d/0B456FmeCw42BVVRISUFjNzd3bHc/edit[/url]”>https://docs.google.com/file/d/0B456FmeCw42BVVRISUFjNzd3bHc/edit</a></p>
<p>Even when the exams cover different material, it’s kind of clear which situation is more challenging, here’s a 221 exam:
<a href=“https://docs.google.com/file/d/0B456FmeCw42BRm1uQ3hkWW5WSEk/edit[/url]”>https://docs.google.com/file/d/0B456FmeCw42BRm1uQ3hkWW5WSEk/edit</a></p>
<p>Is a Harvard advantage really justified for this course? Uh…no.</p>
<p>The same pattern is apparently observed for Northwestern as well (it’s known to be more difficult than the sequence taken by most Harvard pre-meds…and they also tend to curve to B-)</p>
<p>Overall, I believe Harvard’s science programs are overall (organic at Emory is an exception) just far more rigorous than Emory’s. However, there are places like Chicago, Northwestern, and maybe even Duke, that are probably of similar rigor in the sciences and yet grade lower in the sciences. Unfortunately, the sciences is not a place where you can clearly say, “Harvard students deserve more A’s because they are smarter”, because, just like everywhere else, exams (in exam/quiz based courses) are made difficult enough to force curves. And then once the grades of the exams come out, the course’s mean/median can be set to something…almost arbitrary. What places like Harvard (and some other more lenient programs such as Yale and Brown) do is add an extra bump even in STEM courses. They CHOOSE to add this bump even though there is really no evidence to suggest students deserve whatever grades they got. The logic of the other schools seems to be to adjust grades to the center of the +/- scale to C+/B- region (which is relatively uninflated, and is often bell"ish"), but some schools do B/B+ in analogous courses. So while STEM is lower than social science and humanities, it is prone to inflation when you take into account the curves that occur in large courses. They choose to adopt grading practices that are moreso “political” than anything else. It’s hardly based on what people earned when grades must be curved. I mean, seriously, why doesn’t Brown, Yale, and Harvard curve these (usually the pre-med courses) courses to B- (or C+/B-) like most other schools do? Who can seriously argue that a rigorous class at a place like Harvard that has an ending average of 65 deserves a “B” or “B+” while the similarly or more rigorous courses at another school with more standard grading/curving practices give B- for the same mean? Who’s going to say “They’re just so smart at Harvard that they earn more As” when they earn a 65 on those exams? Well damn, I guess all the other schools should get with it and start curving the bad grades to B and B+ since we’re all so smart.</p>
<p>I do believe that those at elite schools will naturally perform better than a bell-curve, but I know from experience that there is inflation and/or mechanisms in place to mask differences in quality in the student body. Some schools are clearly trying harder than others to do this and perhaps have many instructors with grading practices that overcompensate for “protective” (Students’ egos, job and prof. school prospects, etc) purposes.</p>