What high school did comedian Howie Mandel attend?

It was in Toronto, Canada. He got himself expelled by trying to convince a construction company he was a school board member and needed an extension built on the school.

Howie was expelled from another school for throwing a chocolate bar in the pool. Speaking to Houston Matters host, Craig Cohen, in 2019, the AGT star confirmed that he was "asked to leave" three different schools in total. "Everything I've been punished for, expelled for, hit for is what I get paid for today," he said.

https://www.hellomagazine.com/celebrities/499733/americas-got-talent-howie-mandel-genius-prank-expelled-from-school/

Mandel attended William Lyon Mackenzie Collegiate Institute, where he was expelled for impersonating a school official and hiring a construction company to build an addition to the school.

https://en.wikipedia.org/wiki/Howie_Mandel

He also attended Northview Heights Secondary School. Picture of Howie from their Yearbook:
https://www.facebook.com/groups/729853127176639/posts/2567891353372798/?_rdr
https://www.thestar.com/entertainment/television/howie-mandel-canada-s-own-germaphobe-is-having-a-moment/article_2591c884-dd86-5a7a-81c6-438c7b5094dc.html

I know, I think it may have been the same high school I went to but I can't confirm which school! Help!

howie attended either northview secondary school at bathurst and finch in toronto,or mackenzie high school,i just cant recall which but was definitely one of those two,im almost positive it was northview.i knew howie in my school days,and met him and his girlfriend terry soil,who is now his wife,as i frequently double dated with them,as i was seeing one of his best friends.

Mandel attended both Mackenzie AND Northview, for sure, and was expelled from both. I also believe he attended Earl Haig, as well as a Jewish high school (CHAT or something to that effect), and I know he went to Dublin Heights middle school cuz teachers still told stories about him when I went there 15 years ago.