Our paper, "Relationship between self-efficacy measured by the TSES scale and teacher participation in PDS activity," focuses on the collaboration between 19 professional development schools [PDSs] with whom Notre Dame of Maryland University has a partnership. The researchers surveyed in-service teachers in those 19 schools to determine if the collaboration was systemic and to investigate as to whether teacher self-efficacy was related to the likelihood that teachers would participate in PDS sponsored activities. With the use of the Teacher's Sense of Self-Efficacy Scale (TSES), the researchers found the higher the in-service teacher's self-efficacy; the greater the likelihood that they would participate in PDS sponsored activities.