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An extension that allows teachers to see students' tabs and screens. It also allows teachers to remotely close tabs, or put students into a "focus session", which only allows them to have certain tabs open. It is useful for teachers but can be annoying when something goes wrong; for example, a teacher puts students into a focus session but forgets to end it after class ends. It also feels like quite an invasion of privacy. Like, why should my teachers be able to see my screen when I'm checking my email?