@Piggletta I appreciate your views but, as I said before, everyone's views are somewhat affected by their own personal circumstances and biased towards a favorable outcome for themselves and (in this case) their children.
Everyone would have a different definition of local community, but several people would agree that the one currently used by DGS is unfair.
As an example, in the case of DGS, if you live in Crayford or Bexley (on the West of the school, but outside the Kent border) you fall out of the catchment area despite being 1.5-2.0 miles away from the school (road distance). But if you live in, say, in New Barn (on the South-East of the the school, but in Kent) you are within the catchment area despite being 9.0 miles away from the school.
The difference in the cut-off at DGS is also currently about 20 marks, but this is going to increase significantly from the Sep 2025 intake, because of the increased number of places (140 out of 190) allocated to the Zone A applicants - probably this is going to be closer to 30 marks difference going forward, and I can guarantee you that this is a very significant difference in 'performance' when it comes to the 11+ Kent Test (please check the distribution score amongst all students taking the test - this is published by the Kent Council annually).
What's even more interesting (double whammy!) is that if you live in Dartford, you are not being discriminated by the Bexley LA when applying to a Bexley Grammar through their own 11+ Test: places are allocated (mostly) through distance, regardless of whether you live in or out of the Bexley LA.
So, like with everything, we may all share the same general principles and values, but the devil is in the details and the system is far from fair.