31 Bob Peterson 2006 <p>Peterson argues that teacher unions can &ldquo;fight on multiple levels&mdash;including industrial (bread and butter), professional (teacher and education quality), and social justice.&rdquo;</p> <p>Peterson, B. (2006). Rethinking teacher unions. <i>Rethinking schools (Vol. 20 No. 3, Spring 2006). </i>Retrieved from Rethinking Schools 6 May 2008. http://www.rethinkingschools.org/archive/20_03/20_03.shtml</p> http://www.rethinkingschools.org/archive/20_03/20_03.shtml