I can remember getting average A level grades- the school had been meged in the sixth form with two others and many good teachers left, so standards had dropped- so I had to go to a poly rather than a uni, this was a big distinction in the eighties. I ended up on a degree I didn't really care for- did OK in the first year, probably enough to pass, but by the second year, I started to lose interest, wound up the lecturers( nearly got sent down when I refused to a module), and then failed..
Looking back, my own stupidity, cost me big time, as no one wanted a degree dropout, and I had to reapply to somewhere else the following year and had to sit in front of a panel to get a grant and basically grovel to prove my worth. I did get my degree two years later, a second in history, but I struggled to find work as employers would ask why I had to sit two degree courses and currently I am in a permanent but quite low paid job.
Morale of the story was, either I should have tried my chances with the job market 38 years ago or tried to pass first time as degree failures and dropouts do struggle and are seen by many employers as lazy.