Me neitherI'm not sure about in Hong Kong, but in the USA at least almost all schools use MS Word. It's not like they won't be exposed to it.
I used MS Office in schools as well, but we're talking early 2000s here. All schools I visited after that used Macs and iWork, they didn't even have Office installed. Remember, even teachers can have nasty habits - or incompetent principles ordering Windows PCs.