In a guest article, Daniel C Smith, dean of Indiana University’s Kelley School of Business, says that the ever-rising tuition fees at business schools are unsustainable and will harm America's competitiveness. Universities, he says, need to find new ways to bring down the cost of taking an MBA. A quick glance at the cost of attending a  top school would appear to back him up. At Wharton, for example, programme fees for a two-year MBA have broken the $100,000 barrier. On the other hand, many schools say that relatively few students will pay the full whack because there is plenty of financial aid available for the right candidate. Furthermore, given that the same Wharton student is likely to earn a basic salary of $112,000 upon graduation—a 47% increase on his pre-MBA salary—it could be argued that the cost of an MBA has some way to rise before it can be considered uneconomic. So, do you think an MBA has become too expensive?