My son (age 11) is severely dyslexic and mildly dyspraxic.
My first encounter with this was age 7 when he still couldn't spell reception words.I decided to teach him them over the summer. It seemed to work well, he knew them and I knew he knew them ....then 24 hours later having not used them for a day he was back to square one. His spelling has improved painfully slowly but even age 11 he cannot spell many simple words - was, there, they and many others. Even the he will occassionally put teh (even though he does recognise the error on re-reading) - it must be so frustating.
We fought for years for a proper assessment but never got anywhere until we decided to pay for a formal private ed psyc. diagnosis. He is a perfectly capable young man until it comes to the written word.
He managed to secure a year 6 SATS (with scribe and reader where allowed) of level 4b (reading/comprehension) 4b (maths) and 5b (science) but 3c writing (and that was brilliant - he wasn't expected to score but he was determined to do the paper and not be singled out!)
He has good self esteem as we have concentrated on encouraging things he excels at (Science, Creative things and Music) and the school are working with us and him to ensure he makes the progress he is worthy of. It's a new school though, so I don't know how it will pan out. Due to his good self esteem he is able to confidently explain his issues to teachers when necessary and converse on where he needs help. He treats it as something he has to live with and work on, and it's payback for the things he is very good at! I am very proud of him.
We are presently working at home on touch typing so he can, as soon as possible, use IT for his written work which will be supplemented with a spell checker. Later we may look into dictation machines but we need to nail touch typing first. The Ed psyc does think his problems are so severe he will not be able to make the progress required to write independantly for GCSE. Thank goodness for technology!