Thanks messmonster.
I will go and read your thread in a mo.
Unfortunately that means that the school will have to fund most of ds's statement. Not great in a transitional year, as it's not exactly motivational for the next school to take him.
Certain very helpful professionals have told me (off the record) that his funding units equate to 15 hours within our LEA's framework, but the actual figures seem to only cover 10 hours in most other LEAs. 
We are in what's considered an affluent area with low deprivation. I guess that probably means there aren't so many children on the register who have lower needs (not least of all because the schools simply refuse to get kids assessed unless parents really fight
).
I thought schools already had to fund a certain amount of support for statemented children anyway and the statement funding was to cover anything over and above that level? Ours states:
"The school will make arrangements through their delegated budget to ensure appropriate staffing, training and resources are deployed to secure provision as specified in Part 3.
.... the LA will allocate a sum of money equivalent to X number of units (one unit = £X.00). This is in addition to the resources ordinarily available to the school for children with SEN."
So if I have got this right, if the statement units don't exceed £6,000 the school will now be told to fund the whole of the statement from it's own delegated SEN budget.
So, effectively we will be fighting against each other for funding from the same pot of money and schools will be even less likely to assess children at this level, because they know they won't get any additional funds to support them.
I know, in theory, the school should go back to the LEA if it can't cover the costs from it's budget - but back in the real world that just won't happen will it - certain schools will just cut corners and lie about provision instead. 