Good English.
I said "anyways" as in I'm already planning on doing it regardless.
Also, I'm already doing Engineering and Medical Science, but I want to swap to Advanced Science to see what other things I can major in.
Let's say you get an exam mark of 90 and another person in your class comes first in the exam at your school gets 93. Your mark would be (90+93)/2 = 91.5 = 92