Interesting post - thanks.
Not a big point but the "less than 5" point draws me back to the general spreadsheet of 11+ results which is released under FOI in Autumn (for the previous year). In that spreadsheet there are 3 particular columns which are
1. "Number of Pupils on Roll for application process"
2. "Number of Pupils withdrawn from 11+ test"
3. "Number of Pupils registered to take 11+ test"
For some schools, it looks something like:
However the <5 is clearly superfluous as one can easily work out the real number (31-30 = 1)
Mind you, that spreadsheet is also flawed in that the columns for independent schools and OOCs should be labelled differently (but aren't). For them, column 1 should say something like "Number of pupils who express an interest in taking the 11+". Column 3 should say "Number of pupils who actually sat the 11+ test". That leaves Column 2 which should say something like "Number of pupils who expressed an interest but later withdrew before taking the test".
The point being that the spreadsheet currently gives a misleading impression that, for independents/OoCs, Column 1 shows ALL those who are on the roll at those schools and are of the right age to take the 11+. That's what it does for all state schools in the list so it's an easy mistake to make.
This flaw can lead some commentators to assume that to get a legitimate pass rate for independents/OoCs (directly comparable to state schools' pass rate), all one has to do is divide the number who passed by the number in either Column 1 or 3.
But you can't because the numbers mean different things for the different types of school.
Have I lost you yet ?