Sorry very long.
Sandy - Unfortunately schools have got your daughter through to year 9 with little or no support. You will have a fight on your hands to get them to put anything in place now, but it's not impossible.
A diagnosis may help, but a Dyspraxia label itself won't get your DD support, you need to focus on her needs.
Indigo is right your DS doesn't need a statement to access a laptop in school generally or for exams.
Teachers can transcribe after an exam, but schools are reluctant to do this as it is resource intensive and takes a long time.
IME Schools are generally reluctant to provide laptops for children on a day to day basis, though they will provide them for exams. Which leaves me questioning why if the child needs one for an exam, do they not need one on a daily basis?
An OT can test writing skills/levels.
Schools also have to test writing/computing skill to apply for exam concessions.
But you may find that they don't necessarily agree, for example DS(15) was found by OT to have writing skills at -0.2 percentile level, appropriate to 7 yr old. Difficulty forming letters, concentration required to form letters/write had significant impact on writing and content etc.
School tests showed significant differences between writing and typing skills; amount of work completed in same time limit, content of the work.
However, while OT recommended laptop, school stated his writing was legible he doesn't need one day to day but can have one for exams!
On IEP to use computers for 'large amounts of writing', they won't determine 'large amounts'- has only has access when whole class is using IT.
Applied for one quoting DDA, school allocated one to DS Sept 10, but conditions of use, plus the fact he didn't know where it was kept, meant it remains unused.
We had meeting with LEA and school on Tuesday. Brought up issue of laptop again, one has been in place since Wed in those classes where he does the most writing.
The academic level your DD is working at may have an impact on what help the school will provide going into GCSE's. If she's predicted A-C's she probably won't get any help unless she starts slipping.
If she's D/C borderline there may be help/support available, you may have more luck accessing a laptop.
If she's predicted below a D, there doesn't appear to be much incentive for schools to support DC's.
Sorry for the negativity.
Minx