1 and 1 are Princeton University. The second place is MIT. The third place is Harvard University and Stanford University. The fifth place is Yale University. The sixth place is the University of Pennsylvania. Tied for seventh place are Duke University and California Institute of Technology. Tied for ninth place are Brown University, Johns Hopkins University and Northwest University. 12 places are Cornell University and University of Chicago.

2. 13 is the University of Notre Dame. 14 is Georgetown University. 15 places are Columbia University and Vanderbilt University. 18 is Washington University in St. Louis. Tied for 20th place are Rice University and UCLA. Tied for 22nd place are Carnegie Mellon University and Emory University.

3. The University of North Carolina at Chapel Hill and the University of California at Berkeley tied for 24th place. Tied for 27th place are Boston College and new york University. Tied for 29th place are Georgia Institute of Technology and the University of California, San Diego. Wake Forest University, Oak Forest University.

4. University of California, Davis, Miami University, Miami University, Pennsylvania State University, Southern California University, North Carolina State University.

5. Washington University in St. Louis, University of Florida, Austin, University of Texas, Austin, Boston University and brandeis University.

The significance of ranking is as follows:

1, ranking can convey the overall level of children in the class simply and clearly, and intuitively understand the gap between their own children and other children in learning. Ranking can motivate outstanding students by going up a storey still higher, and can also set a chasing goal for ordinary children and encourage children who are temporarily behind to chase the goal; A lot of useful information can also be interpreted from the rankings.

2. Sorting can be based on different standards and methods, such as comprehensive evaluation, principal component analysis and fuzzy evaluation. The ranking results may reflect some important factors, such as the academic reputation of the school, teachers and facilities, but there may also be some limitations, such as inaccurate data sources and unreasonable evaluation standards.