Technology can replace many teachers in their present roles.
If all we cared about was to produce what the current system does, we could indeed operate with fewer people. However, new demands will arise to take up the slack . There have always been demands for more personal attention from teachers than could be met , and those demands are likely to increase with increasing worldwide competition. Education is not a matter of getting to where the Joneses were ten years ago. It is more a matter of trying to get to where the Joneses are likely to be ten years from now .