A Montreal West Island High School Cancelled All Classes For 'Security Reasons'

Macdonald High School told students to stay home. The specific security concern is still unclear.

Macdonald High School in the summer of 2022.

Macdonald High School in the summer of 2022.

Staff Writer

Macdonald High School closed unexpectedly on Thursday, March 23, due to "security reasons," as shared in a Facebook post early Thursday morning. "At around eight o'clock this morning, an online threat was posted involving Macdonald High School," Lester B. Pearson School Board Communications Director Darren Becker told MTL Blog over the phone.

The school, located in Sainte-Anne-de-Bellevue in the West Island, cancelled all classes for the day and informed parents that students would be "returned home by bus."

Thursday had already been scheduled for a late start, Becker said, so "the fact that the threat was discovered so early" means that students "were never actually at the school" and not at risk.

Becker couldn't reveal the specific security issues that led to the closure, nor the particular online platform on which the threat was made. Once police arrived on Thursday morning, Becker said, the apparent threat was determined to be "unfounded."

He added that the school expects students to return to classes as normal on Friday, March 24.


The school promised to reveal further details "as events warrant" but has yet to make any more public statements since the Facebook post just after 9 a.m. Thursday morning.

This article's cover image was used for illustrative purposes only.

  • Willa Holt
  • Creator

    Willa Holt (they/she) was a Creator for MTL Blog. They have edited for Ricochet Media and The McGill Daily, with leadership experience at the Canadian University Press. They have an undergraduate degree in anthropology with a minor in French translation, and they are the proud owner of a trilingual cat named Ivy.

Montreal saw over 400 break-ins in April — These are the hardest-hit areas

April saw the highest single-month total of 2026 so far.

I went to Paris as a Montrealer & spent the entire trip being corrected on my own language

There is often a sense that they see our accent and culture as lesser than theirs...

Quebec is considering banning energy drinks for kids under 16 after a teen's death

One family's loss is driving a provincewide push for change.