What the article actually says: the threshold for "force" rises from "student is actively endangering someone" to "student is being disruptive" (throwing food around the classroom is given as an example).
There is no mention of force as a punishment (such as spanking), and force means things like holding a student's hand firmly to stop them throwing food. It's not whacking them with a nightstick.
There is no mention of force as a punishment (such as spanking), and force means things like holding a student's hand firmly to stop them throwing food. It's not whacking them with a nightstick.