why is there no E?

Anyway I remember in Australia they used to (20 years ago....)
have:
Very low achievement 0 - 30%
low achievement 30 - 50%
pass 50 - 70%
High achievement 70 - 85%
Very high achievement 85 - 100%

I was the proud owner of several VLA scores for calculus. My parents just about threw a party when I got a Low achievement one semester. Funny because now I'm learning calculus for fun