I have been following this thread with fascination, and will be very interested to see how OPs son does! Please will you let us all know his results when they come out?
Ok seeing as all the Maths geeks are here, may I ask some questions please?
I grew up and was educated abroad, in a very different system. I did the Maths & Sciences stream in our 6th Form equivalent. Except it isn't really equivalent - it was four years rather than two, age 16-20; and much less specialised: Everyone in my stream did Maths, Applied Maths, Physics, Chemistry, Biology, Geography, History, literature and linguistics of our native language, two MFLs, and either Art or Music. The kids in the other streams did Maths and Sciences too but took them less far/covered less stuff, devoting more time to e.g. MFLs if they were in the MFL stream.
So we did four years rather than two, but much more spread out over many subjects, rather than concentrating on just three or four. Now I have always wondered how what we did in Maths would compare to Maths A-Levels. On this thread most people who have real insight into Maths A-Levels have been pretty certain that it would take an exceptional individual to achieve what the OP's son is trying to do. I of course have no way to judge but it what everyone was saying seemed to make sense. Then OP's DS did those mocks and surprised everyone...
So I had a look at the A-Level Subject Content as published here
Except I don't really understand how that document ties up with what people have been saying here what with C1, C2, applied modules, etc and what is AS vs A? And where does Further Maths come into it - a few instances in that doc refer to 'Further Maths only' e.g. complex numbers.
I am asking because I'd like to understand how amazing it is what OP's DS is trying to achieve, but also because this thread has made me consider re-visiting my maths. Perhaps even go and do some A-Levels as a private candidate (giving myself more than a week to get up to scratch though!)
I would be doing it out of interest, because Maths is fun. But also on the background of having been out of work for a long time with nothing really to go back to, so having a recent qualification might help with getting back into work eventually. Or is that silly?
For info, having looked at that document linked above, we did do pretty much everything on there in our course. Including complex numbers and matrices. Though things like the kinematics mentioned, we covered in physics rather than in maths.
I was very good at it then, achieving A* equivalent without much effort apart from turning up to class. But it has been over 20 years since and most of it is gone. It would be quite an effort to re-learn it all. Any thoughts from the maths people here?