His teaching interests involve community development, social policy, research methodology, organizational theory and international social work. Jeff has worked with street youth in Toronto, Montreal, Halifax, India and Guatemala. He has published numerous academic articles about street youth culture and has completed a film documentary looking at the plight of street youth in Guatemala City. His most recent works include: a book titled Being Young and Homeless: How youth enter and exit street life (2004, Peter Lang USA) which chronicles the stages of street engagement and disengagement for homeless and runaway youth; and a National Homelessness Initiative funded study (2005; in press) looking at how young people across Canada navigate their way out of street life.