Factors that have led to post-tenure evaluation of faculty are considered, along with limitations of tenure in general and current post-tenure evaluation practices. Positions of advocacy and opposition to post-tenure evaluation are identified, along with practical considerations that institutions might consider before modifying or implementing a formal process for post-tenure evaluation. Three purposes of post-tenure evaluation are identified: to supply documentation for removal for incompetence; to provide input for decisions in the areas of reductions in force, merit raises, and promotions; and especially to support faculty development and improved instruction. Five principles of faculty evaluation are recommended: a clearly defined purpose, multiple sources of input to the evaluation, identifying areas and criteria to be assessed, measurable standards, and a flexible and individualized evaluation plan. Appended is a summary of a survey of 30 institutions, 16 of which had a formal post-tenure evaluation plan. Information is provided on evaluation objectives, effectiveness, frequency, participants, process followed, and the names of the 16 institutions. Also appended are 16 pages of references and information on sources of sample rating forms for faculty evaluation. (SW)