HK birth rate is dropping, population has been stayed at around 7m for long (& that is filled by immigrants from china). Education is already oversupplied. Almost everyone goes to university, & the graduate standard is worse than F.5 student 20 years ago (not to mention those in the 70s, that's HK golden age).
We need quality but not quantity.
On the other hand, there is more elder people. Follow the demographic change, the simple answer to Mr Tsang's worry on increase in elderly subsidy is the govt should cut education expense, & increase in health & elderly etc.
Honestly, I also think the immigrants should not send their kids to HK for education. It's better to be educated in China. It will make their child stronger, & also possesses better language skills than in HK.
Do you find funny about the recent promotion on continued learning in english? So what the hell are these people learnt in 9-year free education?