Source: Freedom, Loyalty, Dissent (1954), p. 88 
Context: The search for subversives results in the intimidation of the independent, the original, the imaginative, and the experimental-minded… It discourages the discussion of controversial matters in the classroom, for such discussion may be reported, or misreported, and cause trouble.
                                    
            
        
    
            Quotes about classroom
            
                 page 2
            
        
        
    
    
    
    
    
    
    
    
        
    
                                        
                                        Teaching as a Subversive Activity (1969) 
Context: About the last place any of us can expect to learn anything important about the realities we have to cope with in our wistful pursuit of life, liberty, and happiness is a classroom. If we decided that schools must do whatever is necessary to help students to learn the concepts and skills relevant to the nuclear space age, we wouldn't spend much time sitting inside of small boxes inside of boxes — even with all the fancy hardware being developed to jazz up the Trivia contest. It's probably true that most of what we all know we didn't learn in school anyway. Moreover, developments in electronic information processing make the school as it presently exists unnecessary... the "new education." Its purpose is to produce people who can cope effectively with change. To date, none of the new "educational technology" has that as its purpose. Remember Santayana's line: Fanaticism consists of redoubling efforts after having forgotten one's aim. The developments in "educational technology" are intended to do all of the old school stuff better... but that's not the aim of the new education.
                                    
                                        
                                        Nobel Prize autobiography (1998) 
Context: Real understanding of a thing comes from taking it apart oneself, not reading about it in a book or hearing about it in a classroom. To this day I always insist on working out a problem from the beginning without reading up on it first, a habit that sometimes gets me into trouble but just as often helps me see things my predecessors have missed.
                                    
“I have written a book with Jacob Laksin about universities called One Party Classroom.”
                                        
                                        Among other things, the title highlights the fact that so-called liberals have purged American faculties of conservative voices. It has been the most successful witch-hunt in American history. 
[David, Horowitz, http://townhall.com/columnists/davidhorowitz/2009/05/04/the_threat_at_home, "The Threat at Home", townhall.com, July 31, 2006, 2014-21-06] 
2009
                                    
                                        
                                        Dr. Eduardo Padron, President of w:Miami Dade College (June 16, 2005) 
About, 2000s
                                    
“Stop leftist language in our classroom.”
Outrage over TikTok video by Tom Van Grieken https://pnws.be/verontwaardiging-over-tiktok-filmpje-van-tom-van-grieken/
Source: The Underground History of American Education: An Intimate Investigation Into the Prison of Modern Schooling (2001), pp. 105-106