The steps are:
- Convert each semester of grades to ABCDF letter grades. For percentage grades, this may be school-dependent. Health and PE would generally not be included in academic college prep courses. Inclusion or exclusion of art can be controversial here; some colleges require or recommend it as part of college preparation, while others do not. I would lean toward including art, because it is a subject normally taught in general or liberal arts colleges and universities and therefore considered an academic subject.
- Convert A=4, B=3, C=2, D=1, F=0.
- Add up the letter grade values from the previous step, and then divide by the number of grades.
Weighted GPAs normally include bonus points for honors, AP, IB, etc. courses. However, the bonus point values vary, so there is not much point in calculating it unless you know what a specific college does, in which case you can calculate for the purpose of that specific college.