some of the Harris Academies in South London
There was a lot of publicity about this a year or two ago. However, the figures being used for the Harris Academies were for the cohort taking GCSEs and reflected the intake at a time when the schools concerned were CTCs and were allowed to ignore the Admissions Code. Their intake now seems to be pretty similar in makeup to the population of nearby primary schools.
On your other points:
- I agree that some aptitude tests can be proxies for intelligence tests. They flourished at a time when secondary schools were encouraged to have a specialism for which they received additional funding. Now they are becoming rarer. Only 10% of places can be allocated on aptitude. Note that there is a limited range of subjects that can be used - PE, sport, performing arts, visual arts, modern foreign languages, design and technology, and IT. Note that schools can only use aptitude in design & technology and IT if they selected on that subject in 2007/08 and have done so every year since then.
- Thankfully most faith schools keep their religious criteria fairly simple. For CofE schools it is usually just about regular church attendance, although parents may need to make sure that they are attending in the right parish. Some schools (London Oratory spring to mind) have indeed put very complex criteria in place which have been in breach of the Admissions Code. There are still more that need to be brought into line.
I must admit I'm not entirely sure why you think setting catchments is a bad thing (if that is what you think - you seem to lump it in with aptitude tests).
I would never argue that everything in the garden is rosy. Some schools try all kinds of ways to get round the Admissions Code and enforcement is sometimes weaker than it should be. But I am somewhat suspicious of the some of the allegations in Fiona Millar's column, to say the least.
For example, the first school she talks about is Langdale Free School in Blackpool. This was an independent school which converted to a free school in 2013. As an independent, fee paying school it is unlikely to have had children eligible for FSM. Most, if not all, of the pupils that were at the school in their last year as an independent school will have remained at the school. It will be another four years before all the ex-fee paying pupils are gone. The figure Millar quotes for children eligible for FSM at this school (2.4%) appears to be an old figure, possibly from just after the school became a free school. On the latest census it was 59.3% which blows her argument out of the water completely.
I haven't looked at the other schools she discusses. Having found this level of inaccuracy in the figures for the first school mentioned I lost interest in the article.