If you are considering an international school that has IPC check if they are running it with specialist education or if they are trying to get by with just GP teachers.
GP teachers at IPC schools are expected to teach all areas of study and discipline. How will one person handle Music, PE, Art and DT as well as ICT? It is the type of curriculum that is born of economy or lack rather than providing quality it is trying to make do with less teachers. Would you really want your child to be educated by one person for the entire year?