It comes after his own child was attacked and hurt in school, and he accuses those in charge of covering it up or ignoring the issue and not doing enough to deal with it. 

Now he's gathered evidence from other parents and teachers, trying to get action. As part of his campaign, he's doing a 7-part special that airs every Wednesday at 6:50 AM on AM640's morning show.  

Knight was let go after years of doing CTV Toronto's weather - the first indication Bell wasn't interested in having more than one fulltime forecaster. He's since become a content creator on the Internet, and is using his media experience to get attention for his cause, called "Hold Schools Accountable."

It's not his first appearance on the station - Greg Brady has had him on as an occasional guest since his campaign for justice began in earnest in June.