By what twisted thought process can a day school consider itself a "co-parent" to a child? My children have two "co-parents:" their mother and father. Schools aren't even legal to act in loco parentis unless they're a boarding school--which isn't common in North America, much less Canada.
It's one thing to act when there is clear evidence of abuse, and there is a clear and present danger to the child's life. It's another thing entirely to have the father of the child arrested after the child draws a picture of her daddy with the gun he shoots monsters with.
7 minutes ago