Training students in the law is the business of the University of Chicago Law School.Increasingly, so is business.In his 5½ years as dean of the law school, Michael H. Schill oversaw several initiatives that link law students with business training. These include the expansion of the law school’s Kirkland & Ellis Corporate Lab — a legal clinic that connects students with Fortune 500 companies — and the launch of the Doctoroff Business Leadership Program, which gives graduates a certificate …