^So, what changed, then, because the move from no preparation to the current situation was far too slow to be because of the abolition of most grammar schools - and it has even spread to areas which still run a grammar school system without super selectives in the locality.
Was it the move to GCSEs and more people going to university? Did that result in the mad rush to get your children into a school with a "reputation" for excellence? Or did the standard of education drop so dramatically that people are these days having to make up for inferior primary education? Or are a higher proportion of people generally more neurotic, competitive and insecure these days and taking it out on their children, who 25 years ago would have breezed into a grammar school without years of intensive tuition in exam technique, first?^
What's changed; when I took the 11+, there were 3 papers English, Arithmetic and verbal reasoning. The English and Maths were what you were doing in primary school anyway. The verbal reasoning was an unknown, although our teacher did mention some of the types of questions that might come up. If the 3 subjects had equal weight, then parents who wanted their child to go to grammar school were probably missing a trick in not teaching it - but there wasn't so much information in those days - no bond papers and that sort of thing. Probably the internet has a lot to do with fuelling it.
Today, many 11+ tests have replaced testing things taught at primary school with tests of VR and NVR, (although I believe Kent adds maths to the mix). So nothing to do with inferior primary education. In fact the idea was to make up for variations in quality of primary eduction and the theory behind the tests is to test potential rather than ability. And, if all children came to these tests cold, that would be the case. But these days parents are much more savvy, much less likely to know their place, less likely to think 'if the test shows you should go to this school or that school, that must be the school for you'. Then you have far more parents who, years ago, wouldn't have thought of state education entering the competition - for competition is what it is.