I got a 17 on the PAT the first time I took it and got a 22 Academic Average, 21 Science Average. It took me almost a year to decide if I should retake it again. My GPA is a 3.7, but my science GPA is about a 3.5. I called UCLA, which is probably my first choice school and talked to a bunch of people about what they thought I should do. Most people said that the 17 didn't mean that I was an automatic rejection, however, they said if I wanted to improve my chances of getting in, I probably should retake it again. So I studied really hard for about a month, and retook the DAT. I got a 20 on the PAT the second time around and my AA and Science Average both went up one point. I think the suggestion of contacting your first choice school and asking them what they think you should do is a good one. Good luck!