KeepOn - not sure really. Are they properly designated special schools which children can only get into if they have statements? If so, I suppose at this stage it's a matter of looking at the staffing, whether they are appropriately qualified and experienced, whether they have adequate access to therapy, whether they have adequate funding etc.
What really concerns me is the special academies and the fact that children can be put there without statements. That means that they can be shunted there without any adequate assessment of their needs and what support they are going to need, and no provision for review etc. There are signs that some of the big academy chains are going for this which leads to worries that they will use them as a dumping ground for pupils they don't want spoiling their exam results in their other schools. The only way to challenge this sort of placement would be quite lengthy, i.e. you'd have to apply for assessment and hope to get an EHC Plan where you would ask for an alternative school to be named.