不行，必须要有SAT成绩。学校官方网站上写的，大家都必须考SAT Reasoning，不必须但是强烈建议（也就是说大家都会有，所以没有的人就吃亏了）考2-3门subject test. A Level 成绩（predicted或者完成的）也都是要交的。Northwestern University requires all undergraduate applicants, whether educated in the United States or abroad, to submit the results of the Scholastic Aptitude Test (SAT Reasoning Test) or American College Test (ACT) with writing.SAT Subject Tests are not required for admission [...] However, Northwestern strongly recommends that all applicants take two or three SAT Subject Tests before the application deadline. 来源：