I really am sorry to be so negative! I felt bad yesterday to be so 'yeah but no but' about it.
The diagnosis thing is a good point too, as the SENCO at my school is on our LEA panel who make the decisions about funding etc. and when J got his OT report and the psychiatrist brought up the autism diagnosis, she said that J would get more hours (he only officially has 23 hours) because of the extra diagnoses!
So wrong - shouldn't be about that.
However, J did get his initial statement without any diagnosis and when he was officially dx ADHD, the hours didn't change. So maybe my SENCO means the OT report brought up new 'official' needs.
Oh it's all so confusing.
I can see why you want him to get the support he needs now, and it's lovely that the head's so supportive. But LEAs are devious evil b@st@rds (and I have the pleasure of being employed by my son's LEA) and I would hate you to lose what your son needs.
Good luck - they don't make it easy, do they???