multiple campuses: Economics for Leaders
http://www.fte.org/student-programs/economics-for-leaders-program/
multiple campuses: the LEAD program's summer business institutes: https://www.leadprogram.org/apps/pages/index.jsp?uREC_ID=475670&type=d
multiple campuses: WIT (Whatever It Takes) - http://www.doingwit.org
Babson (MA) - http://www.babson.edu/undergraduate/summeratbabson/summer-study/Pages/home.aspx
(programs in both idea generation and entrepreneurial thinking)
LaunchX, at Massachusetts Institute of Technology when not virtual (MA): https://launchx.com/summer-program
Marist (NY): http://www.marist.edu/summerinstitutes/business/
Michigan State: http://www.bus.msu.edu/mbp/summer.html (specifically geared towards students of color)
University of Rochester (NY): https://admissions.rochester.edu/pre-college/programs/business
Stevens Institute of Technology (NJ): https://www.stevens.edu/admission-aid/pre-college-programs
Wake Forest (NC): https://immersion.summer.wfu.edu/opportunities/institutes/business-institute
Wheaton College (MA): http://wheatoncollege.edu/summer-college/
Discover@Wheaton. A residential credit-bearing summer program for: Rising Juniors and Seniors high school students. The business and entrepreneurship program, entitled "Innovation and Social Change," is taught by Dennis Hanno, Wheaton College President. President Hanno is co-author of From Ideas to Action, which is used as the curriculum centerpiece of Babson’s Summer Study program of which he is the founder before leaving for Wheaton. (This program is considerably less expensive than Babson's similar program which specializes in entrepreneurial business.)
Wharton Global Youth programs at UPenn (virtual and residential options available): https://globalyouth.wharton.upenn.edu