Totally agree. Many famous schools said in their briefing sessions that their schoolchildren can speak fluent English and Putonghua coz they have English and Putonghua classes during the week. And they have no problem whatsoever when they move on to secondary schools. Chinese Primary school not a problem in bridging to an English Secondary School.
I guess Primary Schools in Tin Shui Wai have the same language classes, but the kids dont even speak basic English when they passing out from primary schools. I never believe that they are stupid. I must say thanks to parents, they have make a contribution which is too easy to be ignored by "famous" schools.