帮你看了一下Saint James的官网，关于早申是这样描述的：Early decision is an excellent option for students who have already decided that Saint James School is their first choice. Acceptance is binding --- applicants who are accepted agree to enroll at Saint James School and withdraw all applications to other schools.
ED是binding的，必须要去的。如果你选择了其他的学校，被学校发现，学校是有可能告知其他学校的。放弃全部的学校，你意思是不去美国的话，和学校商量，学校会单独核实（case by case），也许会取消你的ed录取。不过，无论你主动不去，还是学校撤销了ed录取，对于学生本身来说都是违法协议（不诚信行为），对于以后继续就读还是有些影响的
