Confidentialcoll, you seem to be proving "GS students, on average, do poorer with grad school admissions" by navigating from the hypothesis "GS students are inherently weaker students".
Certainly something could be inferred from the higher acceptance rate (
Columbia University Statistical Abstract | Home, but given the nature of the school-- returning nontraditional students versus the college admissions process as we know it for CC/SEAS from high school-- it's hard to reasonably draw a conclusion. At least until someone in the administration releases a report indicating what the average GPA of GS students is, versus that at other schools.
It might be worthwhile to parse this document, the results of a survey of post-graduation plans of students from CC/SEAS/GSAS/GS/etc/etc.
Columbia University Statistical Abstract | Admissions 2004-2006
The salary distributions, of those who answered the question (likely those employed, and not immediately going to graduate school)
General Studies Salary Distribution:
38% - under $40k, 56% - $40k - $69.9k, 6% - over $90k
SEAS Salary Distribution (of
15% - under $40k, 66% - $40k - $69.9k, 19% - over $70k
Columbia College Salary Distribution
51% - under $40k, 46% - $40k - $69.9k, 3% - over $70k
Percentage of respondents who immediately accepted post-graduation employment:
CC - 41.4%
SEAS - 37.6%
GS - 29.2%
Percentage of respondents who're pursuing graduate school:
CC - 21.5%
SEAS - 22.8%
GS - 20.4%
There are a whole bunch of ways to interpret these numbers without more data. For instance, the SEAS figures include those in SEAS as graduate students-- oftentimes masters degrees are crucial for higher salary. Of those who're undergraduate engineers, it is a frequent phenomena that engineers are paid the most immediately out of college, w.r.t to other majors, but tend to have a pay ceiling not far above.
It's also clear that the minority of those working in financial services from any of the schools, particularly liberal arts focused GS and CC, would have their salaries weighed out in the overall distribution by their lightly employed English major and Art History brothers.
There's probably also some selection bias with those choosing to report salaries versus those not.
I think it's also worth noting that of GS, 13.9% were already employed full time while in school-- this figure was 11.7 percent for SEAS (perhaps mostly grad students, but I can only speculate) and only .3 percent for CC.
Also, this data does not, of course, address a notion you introduced: that GS students fare poorer in school or have some inherent weakness when compared to CC students, in that they presumably didn't have to withstand a more rigorous admissions process. I have nothing of this data to reflect on that, given that admissions to Harvard Medical School and Wayne State Med would be treated equally.
I think it's worth reflecting on the nature of many GS students though. The stereotype of the slightly older student returning to school and putting more effort into his or her studies is well-examined. I can think of, and I'm sure you can too, of a number of undergrads in CC/SEAS who worked very hard in high school to win admissions, only to become complacent and fun-having on arrival. That greek life membership and athletics are aggressively pursued by that younger age group too, moreso than GS, would probably also contribute negatively toward the overall mean of performance.
I keep vacillating between my own biases of presumption in this analysis though, so I'll wrap it up.