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I think the whole "Caltech grades super-harsh" thing is totally overblown. Here on campus we can access grade distributions for previous classes. In ChE, the worst curve you'll see is centered on a B. In math, bio, and upper-division just-about-anything, most curves are around an A-. You would be hard-pressed to find a top-tier university where the average grade was much higher. Of the students who graduated on time this year (i.e., weren't in their fifth year and had actually completed all of their requirements), around 1/2 graduated with honors (GPA>3.5). This seems to be on par with schools like Duke.
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<p>Well, perhaps it's true that the harsh grading reputation at Caltech can be disputed; I don't know. But what is indisputable is that Caltech has a quite low graduation rate, relative to peer schools. Only 89% of Caltech students will graduate in 6 years, or put another way, 11% of Caltech students won't graduate in 6 years. and While that's obviously better than the national average, it pales in comparison to the Ivies, Stanford, or (since it was mentioned as a comparison), Duke. Even MIT, which is Caltech's closest peer school, can boast of having only 7% of its students not graduating in 6 years. </p>
<p>I can think of two reasonable factors for why such a difference exists, and both would give pause to a prospective premed (or any student, for that matter).</p>
<p>The rigorous Caltech curriculum flunks a disproportionate number of students out, or otherwise causes a lot of students to leave because they know they would have flunked out. You say that many Caltech upper-division courses curve to an A-, yet even if that's true, that just begs the question of what happens in the *lower-division courses, as that may be precisely where those subpar students are either weeded out or are otherwise convinced to leave the school. {For example, if you're getting straight C's in your lower-division course, sure, you're still passing, but I think it's fairly clear that staying at Caltech is going to be a rough ride.} Now, granted, Caltech does provide P/F grading and 'shadow grading' to freshmen, but still, the upshot is that if you're doing poorly in your freshmen year, that's probably a good signal that you should leave. </p>
<p>*Caltech does not have a broad set of non-technical offerings, so that if you find out that you want to switch to something non-techie, you may be better off transferring to another school. Now, to be sure, Caltech does offer some nontechnical majors, but surely nothing like the breadth available at the Ivies, Stanford, Duke, or even MIT. At any school, there are incoming freshmen who decide that they want to switch fields of study, yet the ability to do that is quite limited at Caltech. Hence many of those students find out they're better off leaving and transferring to another school.</p>
<p>Now, to be clear, perhaps it wouldn't be a problem if transferring to another top school was easy. But it is not; getting in as a transfer applicant to a top school is almost always more difficult than getting in as a freshman. In other words, if you get into Duke as a freshman, turn it down for Caltech, but then later decide that you want to go to Duke after all, you may not get in this time around, in which case you're stuck at a school you don't really want. </p>
<p>The bottom line is that in order to get into med school, you first have to graduate with your bachelor's*, but there's less assurance you will do that at Caltech relative to peer schools. </p>
<p>Don't get me wrong. I like Caltech. My brother went to Caltech. He enjoyed it immensely. But he also freely admits that Caltech is a good school only for those students who do well and who fit into the tech 'geek' lifestyle, and he freely admits that the school is quite harsh towards those students who don't do well or who don't fit into the lifestyle. </p>
<p>*Granted, there are some med schools that will admit people who have only completed 3 years of undergrad. But the analysis still holds in that at Caltech you run the risk of not even making it through 3 years.</p>