Lemontree,
I also agree with u that we should observe by ourselve. When I chose the primary school for my duaghter several years ago, I was thinking which one I should put as my first choice. I spent a morning to observe the behaviour of the students and teacher - at least I've some evidence proved by myself in my decision making process.
VictoriaWTLee ,
I only know they are going to have four P.1 classes next year.
For this year, they have four classes in P.2, and five classes in all the other grades. So I think they are going to have at least four classes in each grade.
I have never heard that they are having an open day, but they sometimes have some special function, and parents can join. So you can take a look of the school and talk to the teachers when you join those functions.