Students may want to beef up their transcripts to be more competitive at college application time. Maybe they are lacking in AP classes, or want to explore a possible area of interest to major in at college, or show some skills they haven't been able to demonstrate at their high school. Some students choose to get summer jobs to demonstrate responsibility and independence.
In addition there are summer programs that offer students interesting classes to challenge them, sometimes for college credit. They may want to pursue music or theater in depth and work with professionals in the arts. Or become involved in business or political programs with internships and leadership councils.
Other students want the chance to live on a college campus to see what it's like. Some colleges have their own summer offerings, both academic and recreational, for high school students or host teen programs that utilize their facilities. This can help students gain confidence in themselves, help them develop their college list, and offer chances for dialogues with peers and lifelong friendships.
Unfortunately because of the Covid-19 pandemic, many of the programs over the last couple of summers have been canceled or offered only online. Virtual courses can be useful if in-person opportunities are not available. However there are some programs being offered at college campuses for the summer of 2022.
Here’s links to several pre-college programs:
University of Chicago
University of Wisconsin
Loyola Marymount University
Bard College at Simon’s Rock
plus these programs:
Girls Who Code