Violaghost

I've yet to hear one concrete opinion on the issue, so I think we should conduct the discussion here.

The question is: if the college one is transferring to accepts college SAT/ACT scores, should one retake?

Let's look at cases.

Case one:
A hardworking but not particularly bright student gets a 1980 SAT (29 ACT) in high school, and then retakes and scores a 2080 (31) in college.

Case two:
A cliched high school slack-off who happens to be intelligent but very lazy scores under 1900 in HS, but starts working hard in HS and scores 2100 - a rare case, but some people do really wake up when they get to college.

Case three (that's me =P ):
A bright student scores a borderline good score - 2080 SAT/31 ACT in high school and then re-scores 2150/33 ACT in college.

Case four:
A decent student scores a 2020 in HS and barely improves on the college retake ( say... 2050). For example, his math is a little better due to a college math course he is taking.

In which of these cases [FEEL FREE TO PROVIDE YOUR OWN!] should a student retake?
My argument is that if a student scores poorly due to laziness in HS and then does very well in college and on the college SAT/ACT retake, the admissions committee will understand that he was absolutely not working to his full potential. At a top school, the committee may consequently state that they want to see more of an intellectual commitment (i.e. "reapply in a year")

If a student scores fairly well (2000-2100) and manages to improve his score sufficiently (2150-2300), the committee will understand that he has gained knowledge through college studies and will not give much regard to the new scores, as the old ones do not hurt the application. [This part a UPenn admissions representative confirmed for me]

Please comment and argue; I think we all need one good "Should I retake?" thread.