All I could say is I would prefer ESF more than International Schools. ESF has support from England and has many schools to go to. The ESF chairman is also very responsible. There are many ESF schools. Like Kowloon Junior School, Discovery College, Shatin Junior School, Glenealy School, Discovery Bay International School, Clear Water Bay School and more. These ESF schools support each other. That is the really good advantage about ESF schools.
There are also many tournaments such as Football Tournaments, Mixed Netball Tournament that has happened recently and Rugby Tournaments. But, the disadvantages are that normally, ESF schools are smaller than International Schools. From my perspective, I would prefer ESF schools naturally because my daughter attends Kowloon Junior Schools(KJS)