School principals face personal challenges as a result of the effect their job has on their health. This paper presents findings of a study that examined the extent to which eight health concepts, developed by the Medical Outcomes Study (MOS) team at the Health Institute, were prevalent within a population of school principals. A survey mailed to 266 elementary and secondary principals and assistant principals in 4 school corporations in northern Indiana and Missouri elicited 166 returns, a 73 percent response rate. When compared to baseline data from the national population, both the sample and the national population reported similar responses to the eight health concepts, and both the principals and the national sample scored lower on measures of vitality. Principals' perceptions of their health were above the national means in physical functioning, bodily pain, and general health perceptions. However, principals ranked below the national means in the health concepts of social functioning, role in physical activities, general mental health, and role activities in emotional health. African-American female principals reported means for their overall physical and emotional health that were higher than those of the national population. It is recommended that training programs be revised to recognize stressors and physical and emotional health in order to increase the overall effectiveness of school principals. Three tables and a copy of the questionnaire are included. (Contains 27 references.) (LMI)