The school board's trustee "agreed that Yao did not break any rules. She cited the OCDSB's own guidelines, which say "slogans or symbols that signal solidarity, such as 'Free Palestine' etc. are permitted so long as they don't violate the code of conduct.".
And the board said that no students were suspended as a result of the speech.
So why is this principal's panties getting all bunched up for? She called Yao and told her not to go to school even though Yao's not suspended? Sounds like a personal intimidation by the principal to me.