https://www.greekrank.com/uni/90/topic/3022924/highest-academic-rigor-ranking/
got off the McKinsey methodology for insiders
1) California Inst of Technology
2) Princeton University
3) Massachusetts Inst of Technology
4) University of Chicago
5) Yale University
6) Stanford University
7) University of Pennsylvania
8) Columbia University
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9) Carnegie Mellon University
10) Johns Hopkins University
11) Georgia Inst of Technology
12) Harvey Mudd College
13) Duke University
14) Rice University
15) Swarthmore College
16) Harvard University
17) Brown University
18) Reed College
19) Northwestern University
20) Williams College
21) Cornell University
22) University of California, Berkeley
23) Dartmouth College
24) Vanderbilt University
25) University of Notre Dame
26) University of California, Los Angeles
27) Washington University
28) Amherst College
29) University of California, San Diego
30) Emory University