In which scenario would you petition for what? Or if at all?
How can it hurt your GPA if you petition for either one? I think as a math major using the SAT writing score could be ok?
And does UT accept dual credit?
I don’t see any showing on her UT test records.
And should she stay clear from claiming AP Calculus BC and Statistics?
Credits through transfer or test do not affect GPA. Generally makes sense to petition for credits that are not major related and for which you do not have to take a higher level of that class. UT accepts dual credit. There is a transfer equivalency database where you can see what the credits equate to. Link below. You have to send test scores via AP (if you have not already) to see them in the UT records. If she is a math major, probably best not to take the calculus since there are more calculuses after that. Statistics? I’d ask an advisor. I would not decide any of that until orientation though.