Off they go to college, to hone their skills, navigate relationships and, ultimately, look beyond themselves to a complex world in need of their talents.
Unless you're Stryker Thompson, and you pretty much had locked all that up before move-in day.
Thompson, 18, began classes at the University of Minnesota last week on a Presidential Scholarship. He enters the U from St. Paul's Como Park High School, carrying 65 credits from 14 successful AP exams. He graduated fourth in his class, won policy debate competitions, played baseball and held down a part-time job.
But the big story here is none of those things. It's quiet and sweet, much like Thompson. It's the story of a uniquely perceptive young man, and his mother, a writer, who now wakes up every morning "filled with self-purpose."
Mary Petrie cannot believe "the labor, stealth and detail" her son employed to self-publish her novel this summer. She had put the book, and her dreams, on hold more than a decade ago to help care for her family.
Her son, though, was taking copious mental notes. "There are things in people's lives that need to be fulfilled," he said over pancakes at a St. Paul diner.
He wore a casual blue and beige shirt and wire-framed glasses. His light brown hair was closely cropped, with a lively flip in front. The soft-spoken Thompson apologized for being groggy: He had had his wisdom teeth pulled a few days earlier.
"I felt that it was an injustice to not have a tangible object," he said. "I wanted her to have something she could hold onto, to say, 'Look, this is mine.' "