I hope you don't mind, but I have just found some information posted by a parent on a teachers website. Her son is very disorganised and she set out what they have done to help his organisational skills. Some are very helpful, I think.
'I think they key is organisation. Master Aladin has a plastic box in our hallway. ALL of his school things go in the box. His bag, homework, pencil case, PE kit, tie, any sheets of paper I see lying around the house. It was very difficult at first but things are becoming easier.
He has a home/school journal. This is actually attached to his school bag (on that stretchy rope stuff you can buy at B & Q for a pound or so a meter) so he physically cannot loose it. Naturally everything is labelled (although he has managed to loose a jumper that cost me £19.80 which I'm quite happy about as you can imagine)
He has timetables coming out of his ears. On his bedroom door, fridge in the kitchen, notice board, in his journal.
He has a folder and his teachers know any worksheets etc have to go in the folder. Homework is done on the evening it is set and but straight back in the folder. His folder is ALWAYS in his bag. This saves sheets of paper going missing and completed homework being lost.
Each teacher either writes his homework in his journal themselves or checks that he has done it correctly, gets his support assistant to do it, or gets a student to do it and they also put in a due date. We have to check his journal every evening and ensure he does it (easier said than done most nights) but we need to keep on top of it as some nights I have to type out a translation for his teachers so they can understand what he has written and its much easier to do this if it's shortly after he did it and can still remember what he wrote.
Reading, writing and spelling will probably always be a problem for him as will being able to organise himself without someone being their to put routines into place for him.
When he first started secondary school in September I did check his bag etc every day to ensure he had got the correct equipment. Now I only have to say have you done your bag? What lessons have you got? Do you need your ....... for that? He usually gets it right. '
I think that attaching the H/W diary to the book bag is such a good idea. I am going to sugest this to some of the kids that I teach.
Hope that things are getting better for you and ds.