| Year | Position | Institution |
| 1982 | Michigan State University 4 | |
| 1990 | Michigan State University 4 | |
| 1991 | Michigan State University 4 | |
| 1992 | Michigan State University 4 | |
| 1993 | Michigan State University 4 | |
| 1994 | Michigan State University 4 | |
| 1998 | Michigan State University 4 | |
| 2002 | Michigan State University 4 | |
| 2004 | Michigan State University 4 | |
| 2007 | Michigan State University 4 | |
| 2008 | Michigan State University 4 | |
| 2009 | Michigan State University 4 | |
| 2010 | Michigan State University 4 |
| Year | Role | Course |
| 1982 | Faculty/Staff/Lecturer | Microbial Ecology 1982 |
| 1990 | Director | Microbiology: Molecular Aspects Of Cellular Diversity 1990 |
| 1991 | Director | Microbial Diversity 1991 |
| 1992 | Course Director | Microbial Diversity 1992 |
| 1993 | Course Director | Microbial Diversity 1993 |
| 1994 | Director | Microbial Diversity 1994 |
| 1998 | Lecturer | Microbial Diversity 1998 |
| 2002 | Lecturer | Microbial Diversity 2002 |
| 2004 | Faculty | Microbial Diversity 2004 |
| 2007 | Lecturer | Microbial Diversity 2007 |
| 2008 | Lecturer | Microbial Diversity 2008 |
| 2009 | Lecturer | Microbial Diversity 2009 |
| 2010 | Lecturer | Microbial Diversity 2010 |