A study was conducted to assess commonalities and differences in perceptions among full- and part-time community college business instructors and their supervisors in selected Illinois public community colleges for the following areas: (1) supervisory and personnel development practices currently utilized with business instructors; (2) the ranked importance of selected supervisory and personnel development practices; and (3) in-service educational needs of community college business instructors. Data were gathered by surveying 387 full- and part-time faculty (47.7% response) and 43 supervisors (76.3% response). The final survey instrument included 69 supervisory and personnel development practices, and 70 instructional tasks for which in-service education might be needed. Among the results of the survey, reported here in tabular form, were: (l) full-time faculty placed greater importance on employment, orientation, instructional improvement, and governance/administrative policy practices than part-time faculty; (2) supervisors of full-time faculty placed greater emphasis on supervisory and personnel development practices than did supervisors of part-time faculty; (3) there were great differences between the perceptions of business instructors and their supervisors regarding in-service education needs; and (4) supervisory and personnel development practices employed in Illinois community colleges were different for full- and part-time instructors. (Author/JDS)