Governments do that all the time. Look at the shitty schools we in USA force poor black kids to attend. It's easy to be confused by all the demonization and expectation-lowering we get from the media, if one pays attention to that shit. The end result is the same: if we changed public education at all, we might possibly inconvenience some suburbanites, therefore it's most efficient to just screw minorities and the poor as we have for decades.