This paper reports the status of the Profile of School Excellence (PRO-S/E) after three years use and the results of a second validation study. The PRO-S/E, used in over 20 school districts in six states, is a diagnostic system school districts use to determine strengths and weaknesses based on 11 characteristics of effective schools. Data is collected by PRO-S/E administrators using: (1) district data forms; (2) superintendent interviews; (3) school data forms; (4) principal interviews; (5) school rating forms; (6) teacher questionnaires; (7) student questionnaires; and (8) optional forms to study schools' achievement test scores and students' socioeconomic status. Data from the school rating form and the teacher and student questionnaires develop graphic comparison profiles for the 11 characteristics. Analyzed results are used in addition to the interview and descriptive information to develop a written comprehensive profile of the school district. The validation study resulted in the broadening of the definition of one variable category, "Roles and Responsibilities"; the reassignment to other variable categories of three items for both the student and teacher survey; and the rewarding of five items in the student survey and five items in the teacher survey. (PN)