Moving to Brunei , + children... I have questions!

Hello my husband and I are trying to gather some information about moving over to Brunei for a year.
We have two children a daughter who is 13 and a son who is 10.
We understand that some people put their children in boarding school in their home countries. We really think that the experience would be wonderful for the kids and would like to bring them.
What are the schools like? Are the Expat/international schools expensive?
We would also like to know the price of Rental housing over there as well.
Cost of living and anything we need to know in particular?
Thanks
Narelle and Dean