personally I like the 100 point scale system being used in high school. Namely because if you only use the 4.0 system it states making class rank much more difficult to do because there will be quite a few 4.0 students.
Plus it is not hard for people to understand a 100 point scale.
Either way I do think grad inflation is getting out of hand.
that's the way my law school is and since they grade similar to the bar, graduating above an 80 is great
heck, the california bar is going to grade you that harshly on the bar exam
...and what of the sat? i guess in my day, a 1200 was great and when i later saw people getting scores higher and higher, i became suspect of the test itself