@timjones213 At my school, an A+ counts as a 4.33, A is 4.0, A- is 3.67, and so on. The highest unweighted I can think of someone having in the past was close to a 4.2.
On a side note, I must have calculated my UW and W GPA for the end of this year wrong, because the official number was updated today and I actually have a 4.15 and 4.60 respectively.