This is my older daughter’s path so far and what we plan to do (no idea if this actually maximizes college opportunities)
Freshman summer: Had fun and hung out with friends.
Sophmore summer (this year): Study for SAT, Was accepted to selective writing program - Iowa Young Writer’s Studio (2 weeks). Visit colleges.
Junior summer (next year): Get a HS internship/job. Visit colleges.
Senior summer: Big family vacation.