Ok, so AS and A level are like the junior and senior years in high school here.
Here, a standard test called AIMS is required for all high school students to pass in order to graduate. The first year it was implemented, the average score was 46%. So instead of making the kids learn, we lowered the standards, and made the test easier to pass.
And people wonder why the US is falling behind in science and math degrees...
Your AIMS sounds like the MCAS we have in Massachusetts. It's a horrible test, even more arbitrary than the SAT, and it's required to graduate. They've been dicking around with the standards, trying to find reasonable ones that don't prevent hundreds of kids with good grades and SATs from graduating, but they fail to see the obvious solution: drop the fracking test.