As someone who has lived on the West Coast of the US for decades, I have never heard any American call (), brackets.
I assumed the comment saying "parens: ()" was talking about US, but the replies seem to be interpreting the opposite.
I've only ever called them brackets.
No, didn't use any acronym for that in grade school, and when I did encounter one used in grade schools, it was PEMDAS, not BEDMAS.
Was PEMDAS for us.