All other subjects rather than English are taught in Mandarin and now they have about 7 net teachers and from P3 English is taught by Net.
There are a lots of tests and quiz in KCS.
As for 升中 it is quite good for the past few years - mostly to band 1
Yes. I have an elder one studying in KCS. So have some understanding. I will make some info on on the secondary allotment later. Perhaps later this week.