Take local stream K3 as sample: 2 hours PTH and 1 hr English out of 3 hours schooling.
K2 is 2 hours and 10 mins PTH and 50 mins English.
K1 is 2 hours and 20 mins PTH and 40 mins English.
Don't think that Local Stream is cheap, most of students come from rich family, some of my girl's classmates living in Repulse Bay and/or with driver to pick them home.
I agree KCS's school is old but the language learning environment is good!