'''Merit pay''' is consistently opposed by teachers unions in favor of seniority and advanced degrees, although "we know from a wide and rarely disputed body of research that years of experience and degrees obtained are simply unrelated to a teacher's effectiveness in the classroom."<ref>[http://www.manhattan-institute.org/html/miarticle.htm?id=4458 Straight A's for Performance Pay]</ref>
+
'''Merit pay''' is consistently opposed by [[teacher]]s unions in favor of seniority and advanced degrees, although "we know from a wide and rarely disputed body of research that years of experience and degrees obtained are simply unrelated to a teacher's effectiveness in the classroom."<ref>[http://www.manhattan-institute.org/html/miarticle.htm?id=4458 Straight A's for Performance Pay]</ref>