Should I retake the SAT chem?

If you KNOW you can get 750+ for sure, I would say take it again... :) Nothing to lose except the testing fee... I decided to not take it after Chem Honors and I took it after AP Chem in June and got a 780... after AP Chem, the test definitely seems a whole lot easier and some of the questions become like a no brainer. (then again that's compared to the AP test) but even if you aren't retaking, a 720 is still really good, :) i would say anything in the 700's is great.