VERY LONG! Key stages, GCSE, A level and Hogwarts Quals!

[Heather Moore]

No: HPFGUIDX 30127

--- In HPforGrownups at y..., "Hollydaze" <hollydaze at b...> wrote:
> 
> Science can count as between 1 and 3 GCSEs:
> You can do Single scince where you get 1 GCSE and only take one exam.
> For example you would get a grade D, this is the one usually taken by 
> people who did not do so well at Key Stage 3.
>  
> Double science where you get 2 GCSEs and take 1 exam in each of the 
> three different types of science (Chemisty, Biology and Physics) 
> The three exam papers are combined and then the mark is given adn 
> that applies to BOTH grade so you would get for example A A or D D.
> This is the one taken by most students. The advantage of this over 
> the other two is that if you are weak in one part of science adn good 
> at the other two then your good marks will drag up the bad one.
> 


 Ah! Is this the magical key to the mysterious designation "Double Potions"?   I wonder how it fits? Multiple classifications of potions? Multiple theories of design? Multiple techniques? Perhaps liquids vs ointments vs powders?