The answer is "no & yes"... a summary of the current state of play: DS is going to the local "non-selective"* comp, not our top ranked choice, but I was very surprised at how much we liked it; very supportive & seems good at pastoral care... good for DT which DS loves & good with 75%+ 5 GCSE passes.
However our 1st choice was a single sex grammar (95% 5 GCSEs) which wowed me & DS (DH not so sold as he went to same type of school). DS would have needed 92%+ to get in... he's top 25% so didn't make it but we felt it was worth a punt. HOWEVER in our area, everyone has to take a maths and VR test (unless they want to go to a community school ie. a genuine comprehensive*). The weekly tuition from mid-Y4 did him the power of good; a wonderful retired HT who has built up a relationship with DS & DS has been able to communicate the areas he hasn't followed in class; the pace of Y5 & Y6 has been dizzying. DCs are more robust than we give them credit for - many of his friends didn't get to the grammar either and they just move on (unlike the DPs who weep into their G&Ts...).
It looks like with his consistent record of working hard all year - I am hoping for Level 5s across the board, he'll have scraped into band A of the comp... not top set (everyone is setted from day 1). I have my fingers crossed. My preference for the selective school was based on the desire for DS to be with educationally enthused boys, the days were longer and so they get more teaching hours, they are taught more subjects and have more in-school opportunities. I am also disheartened by the amount of parental supervision that has been required to date (good state primary) to keep up with where I expect him to be. I was attracted to the slightly more austere working environment at the grammar - they are there to get an education after all.
*comprehensive takes equally at each band (46) but it is oversubscribed after places given to children in care, SEN & siblings, so if you are clever (Band A) - you can live up to 8kms away but if Band C/D you have to live on top of the school. So by being non-selective, it's being selective...
**genuine comprehensive has a "grammar school stream" which does make it seem more attractice - a good marketing strategy for the school anyway.