I've never heard of UNSW Global before my son told me he wanted to take part in an assessment offered by Education Assessment Australia (EAA), a wholly owned enterprise of the University of New South Wales.
In view that he's in a public school, I encouraged him to take the assessment in order to compare his standards with students from various types of school.
I am indeed happy with his result. He scored a distinction which stated that his English writing is "better than 96 per cent of Form 2 students in Malaysia". The areas which he didn't do well were highlighted behind the result slip. Oh ya, a certificate is given too!
Since young my son was an avid reader. He has a flair for language & good in Bahasa Malaysia too. Now I wish he can put in more effort in his Chinese subject which I "force" him to continue studying. Son, I'm very sure you can do it if you put in more effort!