@scmom2017 a 680 math SAT and a 5 on AP AB Calc are not such overwhelming math prodigy qualifications that a college will necessarily feel compelled to ignore the less-than-passing score on the placement exam and their published procedures to accommodate your daughter. If taking the lower level class does not interfere with the proscribed order of classes that she needs to take to complete her anticipated major on time, I would suggest that she just get a great grade in the easy class and the boost it will give to her GPA.