Good grief one and a half pages about the Welsh language and if it has any value outside Wales....Who bloody cares.
The OP was about teaching on the cheap with bi lingual 'teaching assistants'....
I suspect that bi-lingual does have its advantages here, seeing as it a post in Welsh primary schools. I suspect that some kids do grow up in a Welsh language only home so they will need someone in class to explain just what it taking place.
I even have a Welsh mate (yes honest I have one) who never spoke a word of English until he was 14, he didn't need to....However, he saw the error of his ways
did learn English and now by some complete freak of nature teaches English at sec mod schools here in England (Is that mad or what)
Now teaching assistants are no teachers on the cheap because they are not qualified to teach. For that skill you need a degree and a PGCE. They are invaluable however in the classroom. My own daughter also teaches English in a large academy. She also works as a SENCO and she says she simply could not complete her days with the SEN kids without those assistants. who do all the donkey work while daughter gets on with the teaching. Some of her assistants are bi-lingual too although here it tends to be Urdu, Pashto, Dari or lietuvių kalba (Lithuanian)
The oddest bit is the Headmaster still wants these kids to achieve a GCSE grade of D or above and most of them cant even speak more that Hello, Toilet, No Yes.... Amazing place we live in these days eh?