I take that point - in an opt-in area many parents never get the information they would need if they wanted to put their child in for the 11 plus. Notwithstanding that I am talking hypothetically as I would love to see the end of selective education, I suppose while it exists someone ought to be making sure all parents have access to accurate information. I just don't think that person should be the class teacher. Perhaps there should be a standard powerpoint sent out to all schools in an area to get the Head to deliver at a special parents' meeting, and then give the parents a copy to take home - and send it to all those who didn't come to the meeting. I reckon though whatever you do, you will not significantly increase access for those groups who currently don't apply.
The taking of the selective 11+ tests is a taboo subject in most UK state primary schools, seen as "elitist" or "pushy".
I didn't know of any DS' classmates taking the 11+ until I actually saw them standing in the queues for QE and Latymer. Everybody kept schtum until then.
The only people ever to mention or recommend the 11+ tests were the non white ie Chinese and Indian teachers at the school, as a private aside to me, when I asked them specifically.
Why the hypocrisy - it's better than half my DS' class going to Mass every Sunday ( I could see them all sitting in the front pews, just so the priest would notice them! So obvious!! ) so that they could get the SIF signed to get in to the Wren and other faith schools etc.