[aephi alum]

Some time around my junior year, my school implemented plus/minus grades. They did a phase-in whereby the pluses and minuses only showed up on your internal transcript, and your GPA was calculated based on the letter grade without the modifier. It wasn't too bad - you felt good about the + grades, but not so bad about the - grades because the external transcript would only show a plain B or whatever.

The faculty had also discussed an A/AB/B/BC/etc grading system.

Most students had wanted to keep the plain A/B/C/D/F system.

The other thing they changed was that your entire freshman year used to be pass/no record, now it's just first semester. (Get a C or above and you pass; get a D or F and there's no record that you even took the course. This meant you didn't have a GPA until the middle of sophomore year - or, now, the end of freshman year. During recruitment, we used the number of "pass" credits to determine who had sufficient grades to receive a bid.)