GPA calculation-few questions

<p>Hello,
I have a few question on how to correctly calculate UW GPA. Do you include minors, or just majors? Also, when calculating, how do I factor in sophomore and junior year? (HS doesn't include freshman year) Do I just add 2 B's for a subject if I got a B both years?
Finally, if these are all things that the High School deals with that differs from school to school, what do schools normally do?</p>

<p>Thanks!</p>