I heard Think is good for K1 to K3 but not sure about N1.
Different : K1 to K3 - english base
N1 - teach mother tongue (cantonese) & teacher turnover rate is pretty high (just heard from other ppls, not sure if it is TRUE. Recommend to do more research! BK mums, pls share if you know)
Yes, mothers from BK stated that there'll be a change from 5 days to 3 for the PM class cos HKPS wants to expand and have more classrooms. HKPS is one of my preferences but now I really have to think. The environment won't be good for learning when the school is under construction...