Many women in educational leadership positions experience negative treatment from female teachers and female superintendents. This phenomenon is known as horizontal violence, "the curious behavior of members of oppressed groups who often lash out at their peers in response to oppression instead of attacking their oppressors." This paper explores the nature, origin, and effects of horizontal violence, including the dismissive, negative, demeaning, or hostile behavior of some women toward others who have assumed leadership roles in education. It also explores the effects of this phenomenon on female students within schools led by female administrators. Based on a review of the literature, the paper suggests that females in education must be aware of horizontal violence and not let it deceive them or coerce them into practicing it and damaging each other and female students. The first step in changing this behavior is to change awareness, to bring the issue into the open. The paper concludes with a list of nine steps that might prove to be catalysts in this change effort. The steps include more research into horizontal violence, more discussion of equity issues, and more cooperation among women. (Contains 21 references.) (WFA)