Top ten of the hardest:  
 1、的Harvey Mudd College  

 2、的California Institute of Technology  

 3、的San Francisco Conservatory of Music  

 4、的Rhode Island School of Design State  

 5、的Swarthmore College 6 Reed College  

 7、的United States Naval Academy  

 8、的Smith College  

 9、的Massachusetts Institute of Technology  

 10、的Maryland Institute, College of Art Top  

 ten of the easiest:  
 1、的University of Missouri-Columbia  

 2、的Louisiana State University-Baton Rouge  

 3、的Seton Hall University  

 4、的University of New York at Albany  

 5、的Emerson College  

 6、的West Virginia University  

 7、的University of Kansas  

 8、的Auburn University  

 9、的Bellarmine College  

 10、的Warren Wilson College