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<p>From henceforth in this thread I will abbreviate Xth Percentile as Xth%.</p>
<p>My point, which holds true now, was that comparing private-school scores with public-schools’ is like comparing apples and oranges. I stated this at the very beginning. This idea is true wrt CMU v UCLA/UCSB/UCI. My purpose was to show that “normalizing” scores in comparison between, specificially, CMU and UCLA shows a much closer 25th% than what you stated. It wouldn’t be the 100-point + difference. The three factors I listed as to how UCLA reports scores will indeed converge the two schools’ 25th%. The 50th% scores which UCLA reports extremely low at a 1910 mean or so on its website will convert to the following:</p>
<p>I. 1910 mean becomes 1970 or so 50% median.</p>
<p>II. 1970 with superscoring becomes 2010 or so with three part adjustment, conservatively.</p>
<p>III. 2010 with double counting removed will have, say, a 2030-2040 median, conservatively. (UCLA for the last two admission cycles hass excluded Int’ls in score totals – I thought some schools got in trouble for this.) About 135-140% of UCLA’s domestic students, in-staters + oos, less Int’ls, report both SAT and ACT. UCLA proceeds to report both sets of scores on its admissions website as well as on its IPEDS and CDS. </p>
<p>This last point, III, will indeed raise the 25th% materially if not significantly as will superscoring, II.</p>
<p>If you’re into two part, the 2030-2040, with assumption of symmetry wrt scoring, will convert to 1353-1360, 50% median.</p>
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<p>We know that UC discounts the SAT for diversity purposes, but counts grades much more important, more of an evening factor of stats because higher scores run commensurate with wealth. </p>
<p>If you wanted to be fair, you would have done the same wrt grades. CMU reports a CDS, but conveniently avoids the part of gpa mean calculation. Let me guestimate what CMU’s 25th% gpa is:</p>
<p>About 70% of CMU students are top decile. I will guess that the mean gpa of a CMU student will be ~ uwgpa of 3.6. For UCLA, the mean is 3.8+ (again, domestic students)</p>
<p>UCLA’s 25th% looks to be ~ 3.72
CMU’s would be ~ 3.5 or so maybe even less</p>
<p>So if I may mix and match (because calculation of SAT’s and gpa’s are separate and can’t really be combined … but I will anyway…)</p>
<p>The 25th% student at UCLA is:</p>
<p>3.72 uwgpa/1180 unadjusted SAT</p>
<p>T 25th% student at CMU is: </p>
<p>3.50 uwgpa/1300 superadjusted-superscored SAT.</p>
<p>That 120 SAT point diff. between UCLA and CMU will lessen somewhat-materially becasue of my point II, and a lot because of point III.</p>
<p>The UCLA student at the 25th% might be a top-tier, Hispanic Bell Gardens HS grad who didn’t have the funds to do extreme prep for the SAT and may have taken it only once, and the CMU student might be a Webb School grad closer to the middle of his graduating class with loads of prep for the SAT. Surely a Web School grad with a 3.5 would be much higher at BGHS. But that isn’t the point: Diversity for a public school like UCLA is extremely important. </p>
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<p>As I said in the past, they do this so as not to scare off those of poorer background in applying, and later let holistics take its effect. They know what they are doing when they discount scores in the admissions and reporting process.</p>