Update from previous thread. - Dd had her first exam with her 25% extra time .... ONLY THEY DIDN'T GIVE HER THE EXTRA TIME!!! 
It was Biology .. dd was still busy writing when the invigilator took her paper away. She'd left out at least one question and put 'silly' answers in a few others. She finished the paper and had gone back to answer the one she left out. She was then going to re-do her silly answer questions.
I've spoken to her head of year and the school's exams officer (seo) - seo said to dd "you're 15, you must speak up if things aren't right" 
I said don't dare try to make this dd fault, she in sn group for a reason, it was all VERY formal, strange external man taking her paper, quiet room etc etc. Dd wasn't comfortable enough to 'speak up'! So all school can do is get in touch with exam board and let them know school messed up and didn't allow dd her extra time. He thinks they'll mark her paper then allow an average grade. BUT, my thinking is, they'll see a paper with all questions answered and not know which answers dd was going to change. Whereas if she'd left out the silly answers and left the questions completely blank then they'd be able to get a better picture of what extra to award.
I'm furious and don't really know what to do. School have assured me this WILL NOT happen again ... but they messed up her mock exam papers .. and I was assure then that this WILL NOT/CANNOT happen in real GCSE's
