Beginning teachers often identify the school principal as a key figure for support and guidance. Few teacher education conceptual models exist that significantly integrate the building principal into the clinical experiences of teacher candidates. The call for more deliberate principal involvement in preservice arises in regard to teacher attrition and retention concerns. Having the principal engage in active mentoring during preservice may positively address these issues by providing a more complete socialization and enculturation process into today’s context of schooling. A new conceptual model of collaboration (three supports for preservice teacher: mentor, university supervisor, and principal) was presented to include the principal with the preservice teacher, university supervisor, and cooperating teacher in a community of practice for teacher preparation.