At first, they did not give out grades at all. There was only a written evaluation that the professor did for each student at the end of the quarter. Eventually, in the mid 1980s or so, other schools demanded that UCSC give out a grade in addition, so they they could compare Slugs to other students when admitting for post-secondary education. When I send my official transcript over, it's ~75 pages long, not just one page. It's chock-full of detailed personal information about my efforts in Psych-101, Intro to Jazz, etc (or, rather, the total lack of effort, in my case).