They are, I believe, the first academy to publish a proposed change to their current arrangements.
And they are likely to be the only one going this route! I gather that these proposals have - unsurprisingly - been very unpopular with Heads of Uppers in the area, and also further afield. Apparently they also came as a very unpleasant shock, because they were much more sweeping than the original outline plan that the school put out.
I am told that their objections are pretty similar to the issues mentioned already on this thread - cannibalisation of catchment areas, applying a further layer of academic entrance criteria within the two tier system, transport (logistics and costs).
I think I will be reading up on this much more closely ...