I cant help but think it has stopped DD from reaching her true potential and her English levels have been greatly affected by this condition.
It would have affected her English, yes, but you're going to have to prove her ability in other areas
I have a meeting with the head to discuss this and will let you know predictions and cognitive results. Will the school have a list of who they think will pass test before tests are done, we are OOC.
Probably not (unless it's a 'partner school').
I think you need to change your position with the school. For the purposes of an appeal, don't ask them to write about dyspraxia (all they can do is arrange for a referral) - ask them to provide academic evidence (maths tests, for example - but no projects!).
The headteacher's summary sheet, used within Bucks and by OoC partner schools, can be seen here:https://schoolsweb.buckscc.gov.uk/schoo ... anuals.asp
(Click on the 5th download: Headteachers Appeal Summary Sheet - 2012)
Headteachers outside of Bucks cannot be obliged to fill it in, but it's helpful if they are willing to do so! Failing that, it gives you an idea of the sort of information the headteacher should ideally be including in a letter.
Ask the head whether the school does any standardised tests (section 4).