For 34 years, the nonprofit group Learning through an Expanded Arts Program (LeAp) has provided music, dance, theater and visual arts programs at New York City public schools, including many in the Bronx. Last Wednesday, on leap day (Feb. 29), Mayor Michael Bloomberg proclaimed it to be “LEAP DAY” in honor of the group’s contributions. In 2008, we wrote about how they worked with students at MS 399 to create their own superheroes.