That looks like a lot of nonsense to me. People going to language courses (and paying good money for them) do that to learn that language.
It's a public school that he's working in, so I'd guess that the point of the programme is as he says - the teaching is just a side issue.
There is one question - I'm not so sure that the school will be happy for someone taking part in this programme to live so far away. They might only expect 12 hours of teaching, but they might well expect him to be around much more than that.