Librarianship places an ethical demand on practitioners to put patrons or library users' interests before self-interest, and indeed, this is the hallmark of any service profession. But what obligation do school librarians have to their peer librarians and educators? The Code of Ethics of the American Library Association offers this principle, "We treat coworkers and other colleagues with respect, fairness, and good faith, and advocate conditions of employment that safeguard the rights and welfare of all employees of our institutions." Beyond the ethical duty, enormous benefits result from caring for their coworkers--benefits that are not only highly practical, but rewarding at the oldest and deepest level of social organization: the tribe. School librarians speak and write frequently about the importance of the school library as a "safe and welcoming" environment for students, but librarians have the same potential to establish themselves as safe contacts for teachers and other school personnel, and to extend the school library proper to others for whom relatedness is a motivator and reward. The author points out that, for their own survival, school librarians need to create the largest library tribes they can.