St. John’s students pulled off the perfect promposal surprise, which included signs formally asking the Belmont residents to prom. (Back row, from left) Howard Weinberg, Isabelle Draper, Megan Shen, Julia Boyce, Marie Gerety; (seated, from left) Bill Baum, Sam Frank, Howard DeVinney, Hollis Waldt; (on floor) Sandi Bhatia. (Photo: Daniel McQuade Photography)