This paper describes three examples of one-to-one school-university collaborations. In all cases, each one of us-the university partners-collaborated with a teacher who was enrolled in preservice or inservice graduate teacher education programs at our university. The teachers, who taught in different schools, were former students in our research classes. We invited interested students to participate in a collaborative action research with them and three teachers expressed their interest. Even though all three collaborations fell under the heading of “One-to-One” collaboration, each partnership was very different depending on the needs of the teachers, availability of both partners, and interest of the partners. The lengths of time the collaborations took place were also different, ranging from 6 weeks to 8 months. The collaborations were informal, in that no contracts were signed.