BadBadBunny I have shorthand (T-Line) as a qualification. I cannot get work after having time out to raise my family. Shorthand has not made a jot of difference to me in being able to either get a job or command a higher salary. I even had an interview recently where the 12 year old young lady interviewing me asked me to 'draw some shorthand' because she hadn't seen it before. She was advertising for a PA. 
In answer to the OP, I didn't go to a Grammar school and I very much support them. I went to a shit comprehensive school where only 17% actually managed to pass any CSE's/O Levels and my local catchment high school is still in the mid 20% pass rate for 5 GCSE's including English and Maths.
This area needs a Grammar school. Only 3 students from our catchment comp went to University last year out of a year group of 200......JUST 3!
I'm really happy that swathes of the country have brilliant comprehensive schools doing exceedingly well offering
mindblowing bloody opportunities to your children but you are all completely blinded to those in awfully deprived areas with really shit opportunities in life where actually a Grammar school would make a massive difference to their lives.
Making a difference to 10% of this areas population will then trickle down to their children and they will be better educated and demand better standards which in turn will make the area get a grip with their 'woe is me' attitudes after the pits closed bloody decades ago . Education meant nothing if you were going down the pits. It isn't valued enough here so lethargy is passed on to each generation and education isn't respected.
Of course EVERY child deserves a bloody good education but they don't get that so ANY opportunity at all, no matter how small, should be taken and it will grow from there. What's the point in saying 'everyone should have a brilliant education but giving 10% an opportunity isn't fair on the rest so no one should have that opportunity' 