I had an unwanted C section and am starting to do my homework for #2, since I really want a VBAC.

According to this VBAC calculator, I have a 51.3-67.6% chance depending if I select hispanic or not. (I'm half)

here is the link:
https://mfmunetwork.bsc.gwu.edu/PublicBSC/MFMU/VGBirthCalc/vagbirth.html

I wonder how accurate this is??