| University of British Columbia | Professor | 2013-2020 |
| University of Sydney | Honorary Professor | 2013-Current |
| Beijing Normal University | Distinguished Professor | 2013-Current |
| University of Sydney, Faculty of Education and Social Work | Dean and Professor | 2010-2013 |
| University of British Columbia, Faculty of Education | Dean and Professor | 2000-2010 |
| Ohio State University | Professor | 1989-2000 |
| School of Teaching and Learning | Director and Professor | 1996-2000 |
| College of Education, Dept. of Educational Theory & Practice | Chairperson & Professor | 1992-1996 |
| Associate Professor | 1986-1989 | |
| University of California-Berkeley | Associate Professor | 1986-1987 |
| University of Illinois at Urbana-Champaign | Associate Professor | 1982-1985 |
| Center for the Study of Reading | Senior Scientists | 1979-1981 |
| Harvard University | Associate Professor | 1981-1982 |
| University of Arizona | Associate Professor | 1978-1979 |
| Assistant Professor | 1974-1978 | |
| University of Georgia | Research & Teaching Assistant, Instructor | 1972-1974 |
| New South Wales, Department of Education | Classroom Teacher & Demonstration teacher (Sydney University) | 1967-1970 |