区别就是两者意思是不一样具体的不同如下
old school中文意思是adj.
古老的;古旧的;传统的;
例句
They locked arms and sang the old school song.
他们挽起手臂，唱起了那首古老的校歌。
new school中文意思是n.
新学校;
例句
Philippe Halsman, her photography teacher at the New School, asked her why she was studying fashion.
新学院大学（The New School）的摄影老师菲利普·哈尔斯曼（Philippe Halsman）问她，为何要念时尚？
old school意思是原来的学校，new school.新学校
