原句
Why might some people argue that schools are no longer
the great social or economic equalizer?
试译
为什么会有人认为学校不再是社会的缩影或经济均衡?
经济均衡似乎不大通顺，应该译为?
社会的缩影是否恰当呢?
谢谢

equalizer = makes (people) more equal 所以是缩减阶级与贫富差距