Yet again I hear a vox pop with a parent saying that if there's no good local school for their child then they'll have to move to an area with grammar schools. As if that will guarantee the child a place in a grammar school (and as if you can actually depend on the grammar school giving a good education)!
It certainly seems to be true that the non-grammar schools in selective areas are better than the old secondary moderns, but people should remember the entrance exams. If you support the "grammar-school system" your proposal for the majority is a "secondary modern system".