advice for re-taking sat

<p>Hi all,
I am currently a freshman and I am thinking about transfer to Penn of Columbia this year. I got a 2200 in SAT test. Do I bother re-taking it to improve my chances to get into my dream school? But I am not sure if I can improve a lot on the SAT if I retake it. But SAT is more important for a freshman transfer students, right? Is a 2200 in SAT competitive among transfer students to Penn?</p>