Re: Welsh for Office already exists...
OT, sorry. <rant>
There is a subtle difference between mandatory second-language teaching in English-medium schools (which can, I thoroughly agree, appear to be a waste of time), and choosing to send your child to a Welsh-medium school where Welsh is used as a first language.
Yes, some parents probably choose Welsh-medium as a way of avoiding the local sink-school in the same manner that some other parents (in Wales or England) will choose the local Church school in preference. Others choose it because of the whole (largely invented by Victorians) cultural thing, and a few may choose it because it's a fact that you have a lot better chance of a job in the public sector or the media in Wales if you are fluent in Welsh and have already done the "networking" at school. Given that there's not a fat lot else work-wise in Wales at the moment, "every little helps" as they say.
Still others have read the literature from other bilingual cultures around the globe (and there are quite a lot of them) and have realised that being first-language fluent in two or more languages actually conveys cognitive benefits that are simply not available to monoglots. It is an interesting fact that children in Welsh-medium education perform (a little) better (on average) than their peers in English-only schools.
And so you end up with situations such as that in Caerphilly where I live where up until 1982 there were no Welsh-medium secondary schools in the borough. In 1982 a school opened which now has 1,300 pupils, and another one has opened this year which will itself hold about 1,000 pupils (from just three feeder primaries) once it is fully-populated.
At the same time, English secondary schools are being amalgamated or closed. In Caerphilly town itself there were three secondaries. Some ten years ago, one of them closed. The buildings on one site are now a Welsh-medium primary school (see below) and the other site has now been taken over by the Welsh secondary. Further expansion of this site will see one of the other Welsh-medium primaries move sometime in the next year or so.
Of the three feeder primaries in Caerphilly town, one did not exist ten years ago but now has two-form entry (65 pupils entering each year). One moved to a new site five or six years ago and is already full, and the other is moving onto the same site as the new secondary because it also is moving to two-form entry and cannot be accommodated in the existing buildings.
A little way out of town, the primary built by housing developers on a large local development, originally earmarked as an English school, was actually opened as Welsh-medium, and there are plenty more examples.
To answer the point about teaching Welsh in English schools. I find it sad that people find this a waste of time, but then I personally found being taught football and rugby a waste of time and would rather have spent my time in the Physics lab or twiddling with the RML-380Z. It doesn't help that some of the teachers teaching Welsh have poor Welsh themselves and are merely keeping one step ahead of the class by reading the book the night before.
Of course, the teachers with good Welsh are in demand in the Welsh-medium schools :-)