A White House summit on college opportunity in January featured more than one Cinderella story. A young man named Troy Simon told the invited group of educators and advocates how he lived for a year in an abandoned building in New Orleans and did not learn to read until he was 14, but made his way to Bard College, where he was a sophomore studying American literature. He introduced Michelle Obama, whose journey from her modest Chicago neighborhood to Princeton University serves as the emotional core of the administration’s campaign to broaden college access.  … None of the re...