“Spider-Man: Homecoming” secures Peter Parker’s future by returning him to school. The reboot of the “Spider-Man” franchise may be its third start in just 15 years, but this latest one wisely returns Peter Parker to high school. His vulnerabilities as a teen struggling to find his place in the world deepen the narrative and make him susceptible to the evils of the adult world. This one really sticks to the wall too with a likable new lead (Tom Holland), diversity in its casting, and a sympathetic, down-to-earth villain (Michael Keaton). “Spider-Man: Homecoming” is just that – a return to school, a return to greater stakes, and a return to the ubiquitous Marvel fold.