According to a new survey from a team at Trinity College in Hartford, Conn., when it comes to faith, American college students fall (almost evenly) into three distinct categories: religious believers (32 percent), spiritual but not religious (32 percent) and secular (28 percent). Among students who classify themselves as religious, about 70 percent said they were Christians. The number of students who researchers classify as “nones”—who have no religion and consider themselves totally secular—reflects a trend in the larger, general population. According to Pew Research Center data, the number of “nones” across the country has grown from about 15 percent in 2007 to almost 20 percent in 2012 …