 He joined Harvey Mudd College in July 1987 as an associate professor before being promoted to professor in January 1992.He took sabbatical leave from 1993 to 1994 to be a senior fellow at the National University of Singapore.Hoole left Harvey Mudd College in 1997 to work as a visiting professor at the Institute of Fundamental Studies, Kandy (1997) and as UNESCO professor of information technology (1998–99).