A new survey of students who are mothers found that the factor they said was most crucial to their academic success was scheduling flexibility. In the survey, 77 percent cited the issue, but one third of the mothers said that their colleges were not flexible enough. The student mothers also said that they relied on career services and academic advising. The emphasis on scheduling flexibility isn't surprising, given another finding in the survey -- that 56 percent of the student mothers work 30 hours or more each week. The survey (from a national sample) was conducted for Ivy Bridge College of Tiffin University.