Anand
I recently moved to PNG with family. As mentioned above it is kind of living in the jail (because of security). I have been told by office security not to venture out alone on foot(especially after dark) , and by office drivers, hotel security, drivers etc. That means we are kind of confined to hotel or house. i do venture but in day time, or if i have to go to mall i take hotel shuttle.
Schooling, the most famous ones are TEMIS(ela murray school) which has IB curriculum and POMIS, Koroboro International school, St Josephs international school. They have australian curriculum. Cant say about others, but these have hefty fees.
The biggest expense is accommodation so some foreigners have sent their family and are living in sharing. if your accommodation expense is covered then you might be able to make saving else it will be tough call.
Another area is medical care. Quite a few of the medicines are not available or are very expensive and the facilities are functional but for complex issues people go to Australia or other nearing countries