DC sitting for an indie test in January (last minute decision). Maths (he will excel at, I think), Engish, and VR.
English is fine in terms of grammar and comprehension and vocab - and they are easy to check/mark.
However, how do you judge whether the essay part (which features in the test) is good enough? [DS very literal and will try and keep things as short as possible. ]
I know it depends on the school etc., and I know there is supposed to be a "beginning, middle and end". But if for example there is a 30 minute writing component (as one of the papers he is sitting does have), which is worth 50% of the marks, given that there is no right/wrong answer (leaving out spelling errors), how are they divided up? Is it as crude as you get a mark for each sentence you write, you lose a mark for each spelling / grammatical mistake, you gain a mark for each adjective, and so on? 
Just so I can put him on the right track. (State primary so not really helping prep for the tests....)
Any guidance out there or that MNers can give?
Thanks