out of my 4 bhanja, bhanjiyaan.. 2 can read and write (goin to khalsa school  and both singhs) and other 2 can't non-singhs.
Punjabi saarey bol lainde, par parni likhni 50% average.

Tring not to sound self promoting, but as you may have seen on my other two posts, I am one of them..I have been told I speak with a thick western accent, but so what...I have also been told I am one of only 1% that can read and write in it ( although my grammar is effected by English Grammar, but this may be true according to one University survey of all those born out here) and have therefore gone out of my way to do so...I just wished everyone else used it as a language to read and not speak in...selfishly cos they can then read my stuff, but selflessly so they can be truly Punjabi as English people who can read and write in their own language..