Argument: Teachers unions oppose merit-based pay just to remain relevant
'Thomas Hruz. "Quality Control: Merit Pay and Why the Teachers’ Unions Stand in the Way." Wisconsin Interest. Fall 2000: "The threat that teachers’ unions see from a performance-based pay system is clear: it would make them less relevant. The importance of teachers’ unions is reliant upon their superior ability to get for teachers better working conditions and compensation. If individual teachers, or groups of teachers within schools, are able to garner control over the effectuation of their own compensation levels, then the unions are faced with the potential of these teachers saying that the unions’ services are no longer needed, at least when it comes to bargaining for salaries."