Johns Hopkins University Academic summer programs
“While the focus is on rigorous academics and learning, the social experience that results from bringing these students together is an integral part of the program.”
http://cty.jhu.edu/summer/

Stanford University summer programs
“These diverse and interesting academic and extracurricular offerings provide many occasions for personal growth, enjoyment, and the opportunity to develop memorable friendships.”
http://summer.stanford.edu/programs/program/high-school-students-ages-16-17

Boston University High School Honors Program
“For academically motivated rising juniors and seniors, the summer High School Honors Program provides an opportunity to experience undergraduate life—in the classroom and around campus—while earning college credit.”
http://www.bu.edu/summer/high-school-programs/honors/

Berkley Summer Programs
“Learn from and with the best. See what it is like to be a college student, and test the waters of your academic interests and skills.”
http://summer.berkeley.edu/pre-collegiate

Summer Study
“In a safe and exciting supervised environment, all students in our academic summer programs will explore a total pre-college experience combining education with fun-filled extracurricular activities ranging from soccer to music.”
http://www.summerstudy.com/node/85

Lead America
Lead America helps you “explore your future path, discover what inspires you, and achieve your passions.”
http://www.lead-america.org/about/index.asp

Columbia University study abroad
“Experience college life.  Meet other highly motivated high school students from all over the world. Broaden your world view. Earn an official Columbia University Statement of Attendance.”

​http://ce.columbia.edu/High-School-Programs-Homepage