Kids are attending typical Hong Kong style schools -- lots of homeworks/ lots of tests. They speak fluent english. Academically, we do not think there will be any problems for them to adapt.
Reason that we asked those questions was because even as adults we are very nervous/ anxious about moving to a new environment for them. It will be drastic change for the kids. We are hoping to help them to ease into a new environment as smoothly as possible. As parents, we do what we can do

The rest will be up to them.
I used to go to high school at Three Hills. It was a very good experience. Teachers and classmates were super nice. It was 20 years ago but I always cherished the time I spent there. I would certainly hope that my kids will think of their high school days with a big smile when they grow up!
After reading your replies I am confident that we have made a right decision to move to Calgary. Thanks CP!