Review Singapore international school in Manila

My husband may have an offer to work in Manila next year. One of the most important consideration is our children education as they have just started Primary 1 in Singapore. I understand there is a Singapore International School in metro Manila.

Does anyone send his/her children to this international school? Would like to know your experience.
Consideration is the standard and system of this school compared to local school standard here in Singapore. The website says that it follows the local school system in Singapore.
As we may not be in Manila throughout the years they are in school, we may move back to Singapore and not sure whether the kids can assimilate later.

Thanks in advance.