My kid told me that in her year the day before the summer program ended, 3 schools went to the camp site in New Mexico Institute of Technology to talk to the kids about college admissions. And these 3 schools were MIT, Caltech, and Harvey Mudd.
People may ask why these 3 schools. Well, in some sense, they are very similar if you look at the 3 links below:
Colleges with highest paying bachelor's degrees: (Harvey Mudd, MIT, Naval Academy, Princeton, Caltech)
https://www.payscale.com/college-salary-report
Colleges ranked by highest SAT Score (Caltech, MIT, Chicago, Harvey Mudd)
https://www.collegesimply.com/colleges/rank/colleges/highest-sat-scores/
Top PhD feeder schools: (Caltech, Harvey Mudd, MIT)
https://www.thecollegesolution.com/50-schools-that-produce-the-most-science-and-engineering-phds-2/