I found an article on how to convert from a percentage scale to a 4.0 scale because my school does not report grades on a 4.0 scale. I calculated my unweighted as 3.89 and weighted as 4.53 (only counting my core classes, disregarding phys Ed). Those other numbers I posted in my thread came from a website that did the conversion, which must have given a bonus for my A+ grades, but I think the way I calculated my grade is more accurate. Thank you for your lengthy response!