I have a slightly different question for those of you who could provide insight into how AdCom views different schools.
What's the underlying reason that AdComs focus on the quality of your undergraduate institution? It may seem obvious, but let me propose a few things. Let's take the example of a large state university compared to an Ivy League School.
1) As mentioned, Ivy League schools will have far higher grade inflation. Perhaps this is a reflection of smarter students. But in that light, a 3.3 at Harvard is much lower in the distribution than a 3.3 at a state school.
2) Relating to point 1, you have GPAs that give you a lot of insight into a student's performance. However you look at it, differential equations are the same, whether you take them at Harvard or at a public school. Having done my undergrad at a state school and now being in a grad program at a top Ivy (with a lot of undergrads from Ivies), I can attest to the fact that a 3.9 in a challenging major at a state school can easily hang with Ivy League kids.
3) You have the GMAT, which completely puts all students on the same playing field.
Yet despite all this, there seems to still be a preference for students from top schools. Is this because those students generally will have higher grades/GMAT scores than students from lower-ranked schools? Or is there still a preference for a kid from a top Ivy, all else being equal?
Simply put - take the example of a student from a large state school, with a great GPA (with challenging coursework) and a great GMAT... Is that student still at a disadvantage with the AdCom? Any insights would be greatly appreciated.