To investigate the impact of teacher militancy on principals, a questionnaire was administered to 121 principals from four selected Indiana cities that had experienced either teacher strikes or sanctions within the past 5 years. Although a majority of the principals responding were undecided as to the relative effectiveness of sanctions or strikes, most agreed that teacher organizations should not invoke sanctions or strikes and that such tactics should be opposed by principals. Other findings indicate that the principal needs to give thoughtful consideration to (1) the structure and dynamics of the various teacher organizations, (2) his own role in the negotiation process, and (3) affiliation with teacher or principal organizations. In general, principals should strive to be included in all areas of the negotiation process and to understand the various forms and tactics of militant teacher activities. (JH)