Most of the educated blame seems to go towards the teacher&#x27;s unions, which have always been heavily against accountability for teachers, in favor of seniority protections, so that the worst teachers can&#x27;t be fired. Standardized testing, for all it&#x27;s shortcomings, is equally bad for them, since it reflects on which teachers are the worst performing. Low testing scores due to poverty is a poor defense since such deviations can easily be controlled for, as is commonly done in statistics-based research.<p>Teacher unions constantly fighting to kill educational reform has been a recurring theme in most all reform initiatives, including Zuckerberg&#x27;s.[1] There are numerous documentaries (e.g. Waiting for Superman, The Cartel, etc.) covering attempts at reform and how the one thing the unions will never allow is holding bad teachers accountable.<p>[1] <a href="http:&#x2F;&#x2F;www.businessinsider.com&#x2F;mark-zuckerbergs-failed-100-million-donation-to-newark-public-schools-2015-9" rel="nofollow">http:&#x2F;&#x2F;www.businessinsider.com&#x2F;mark-zuckerbergs-failed-100-m...</a>