Why is an "A" in college 94% +?

I don't know abut the rest of you, but when i was in high school an "A" was considered a 90% or higher and was weighted at 4.0. However, in my college and "A" is 94%+ and a 93% is an "A-" which is weighted at 3.677. Does this make sense?For a 1 % difference it drops your GPA a third of 1 point. Futhermore, in high school a "B" was 80-89.99% but in my college a "B" is 84-87 % and an <82% is a B- which is weighted 2.677. Is this the same for all colleges? Is this how they've chosen to deal with 'grade inflation?" opinions and comments needed