High response rates don't ensure survey accuracy
Though it may not grab headlines like Twitter or Facebook, the use of surveys is one of the fastest-growing and most pervasive trends on campuses, and it's no wonder. With rising demands for systematic evidence and rapidly shrinking costs to gather such data, colleges and universities are increasingly surveying students, employees, and alumni to measure all kinds of things—from engagement to satisfaction to the carbon footprint made in commuting to campus.
Radwin, D. (2009). High response rates don't ensure survey accuracy. The Chronicle of Higher Education, 56(8).