Published answers for AA (and later for AAA) have many more points than would earn 100% in an exam – this is because, for example, in a risks/controls Q that asks for SIX risks/controls/deficiencies, there might be 8 or even 9 to choose from (though few students would recognise all the risks, it’s not necessary).
There are two important sources of guidance to know whether a points is 1/2 a mark or a mark …