In the movie Ferris Bueller's day off which group is not mentioned thinking Ferris Bueller is a righteous Dude?

Oh, what a delightful movie! In "Ferris Bueller's Day Off," the group that doesn't mention Ferris Bueller as a righteous dude is the school faculty and staff. But hey, everyone is entitled to their own opinion, and Ferris sure knows how to make the most of his day off, doesn't he? Just like with painting, everyone sees things differently, and that's what makes the world so interesting and colorful.