Tracee Leugers recently dropped out of the University just four classes shy of earning her M.B.A. But she has four very good reasons for doing so. Their names are Brennan, Gavin, Rowan and Morgan. Leugers is expecting quadruplets and, having already taken her statistics courses, realized the odds of doing her homework while changing four sets of diapers, feeding four hungry tummies and wiping four sets of teary eyes weren’t very good. “I can’t imagine doing it with four newborns,” she says. She’ll probably return at some point. Just don’t look for her anytime soon.