I totally agree Mr Happy, some primary schools do teach it, but they are few and far between. It is also taught at Brownies and cubs, I suppose it's a start in the right direction, although it should be a subject the same as any language in schools. This also teaches children at a young age that deafness is not a stigma anymore and is accepted.
There is still a lot of discrimination out there, I see this regularly in my work and quite often have to quote the Disability Discrimination Act (DDA) to employers so that the D/deaf person is treated on an equal basis. Sorry going on a bit now, it's a subject I feel passionately about.