schools have a "long tail" of support staff charged with ensuring that educators have the tools they need to be effective. Just as it makes more sense to judge the quality of army chefs on the quality of their kitchens and cuisines rather than on the outcome of combat operations, so it is more sensible to focus on how well district employees perform their prescribed tasks than on less direct measures of job performance. The tendency to casually focus on student achievement, especially given the testing system's heavy emphasis on reading and math, allows a large number of employees to either be excused from results-driven accountability or be held accountable for activities over which they have no control. This undermines a performance mindset and promises to eventually erode confidence in management.