But it is still worth thinking about the blackboard as a disciplinary technology – one that molds and constrains what happens in the classroom, one that (ostensibly) makes visible the mind and the character of the person at the board, whether that’s a student or a teacher.

Indeed, the history of the teaching profession suggests we have long been obsessed with the morals of the latter. But obviously “character education,” as popular as it is with today’s education reformers and education psychologists, also has a long history – a history bound up in the technologies of the classroom. Grit, mindsets, behavior management – this push for disciplinary practices and disciplinary technologies is not new. Framing this in terms of engineering – behavioral engineering, social engineering, educational engineering, learning engineering – is also centuries old.

Source: Why History Matters