GPA calculation is a total mystery to me so I stopped worrying about it. We live VA and our county only weights AP and IB (5.0). Everything else is 4.0. No classes are called honors but they have “intensified” versions of a lot of things so I assume those equate to honors. But even so, those classes are not weighted. I read somewhere that some school systems, and SC may be one of them to get GPAs as high as 4.9, use a 6.0 level, where AP classes are 6.0, Honors 5.0, etc. But numerical average factors in, where 100 in an AP class would be 6.0, 98 average would drop to 5.8. No clue if that’s true and couldn’t begin to convert my daughter’s GPA according to that scale since her school doesn’t report numerical averages on her transcript. Before I gave up, I had done the math several different ways, and near as I could tell, my D’s 4.15W/3.79UW GPA with 8 APs, 1 IB and 7 “intensified” classes comes in anywhere between 4.5 and 4.75 depending on the formula I use.