Congress and other watchdogs have grilled colleges in recent years for what some regard as the excessive pay of their chief executives. This article reports that a "Chronicle" analysis has found that presidents and chancellors are a minority of the highest-compensated college employees. Chief executives accounted for only 11 out of 88 private-college employees who made $1-million or more in the 2006-2007 fiscal year. And only 90 presidents and chancellors numbered among the 293 who earned $500,000 or more. Many of the others drawing the biggest paychecks were medical-school administrators or professors with highly specialized skills. Those findings come from an exclusive new list, assembled by "The Chronicle," of the compensation of more than 4,000 employees other than chief executives at 600 private four-year colleges. The data were drawn from the financial reports that colleges and other nonprofit institutions are required to file annually with the Internal Revenue Service.