Do you learn English-English or American-English at school?

For example, I write colour (not color), favourite (not favorite), jewellery (not jewelry) and centre (not center) - all English-English spellings because I schooled in ex-British colonies. To write the American version looks like a spelling mistake (although my spelling is atrocious). I - quite ironically - correct my spellcheck.

Just curious. There is no right and wrong. It's all about what you were taught at school - and I'm not familiar with the Canadian schooling system.