how do we know how many students appeared for grammar exams?
is there any statistics ?
how many appeared for Essex exam and how many places we have and also for Woodford county the competition is high and we have 180 places but how do we know the ratio of number of students appeared for the exam this year?
For several years up to and including the year before last, when DS2 sat the exam, the number of candidates for the CSSE test was around 3800 - 4000. From the fact that the main session was declared fully booked before the closing date this time, one might surmise that the number this time was greater. The CSSE people are usually very helpful and would probably tell you at least a rough figure if you asked them.
As for the Redbridge 11+, I'm afraid I have no idea. However much we might have liked our DC to sit for Ilford or Woodford (or not, really - either would be a pig of a journey from here), we are not in the catchment area and are therefore they would not have been able to do so. You could try ringing the LEA or one of the schools?