Well you're maths is imroving which is good and as I said the ball game one is quite easy to improve IMO, you're recall was better than mine (I thought I did awful at that but somehow got satisfactory). With CTC they have a maths test seperately (though I have heard them waving it for somebody who failed it but had a PPL), you have the ball game, wings and something similar to the bingo and then one other thing which combines the hand eye coordination, numbers counting down (have to push a button when the sequence changes) and bingo all combined into a 3 in 1 overloader test (which is quite difficult TBH).
I don't know their specific marking criteria (and they don't tell you how well you're doing for most of the tests) but just keep working at it.
P.S. I also feel obliged to mention that that school sounds to good to be true and if you've checked it out then thats what I'd go for no doubt.