What’s going on with this DOS stuff is simple cruising. Overt “silence” for the entire day (not the minute or two so hated by the Leftwingtards) gives pedophiles and homosexuals on the school staff the opportunity to identify potential sexual partners without themselves “coming out”.
And at the most basic level, it’s a lot easier for the staff than having to teach those terrifying academic subjects about which they know so little. Whew, what a relief!