Current trends and research in education indicated that teacher learning is a crucial link to student achievement. There is a void in the research regarding teacher preferences for delivery models in professional development. Determining teacher preferences is an important component in professional development planning and the driving inquiry for this research. The purpose of this exploratory case study was to determine teacher preferences in delivery models for professional development and whether delivery models influenced teacher behaviors in the classroom. The primary theory for this study was based on andragogy, and the research was conducted under the conceptual framework of constructivist principles. Data collection included interviews with 10 classroom teachers using open ended questions. Data analysis included the extraction of themes and subthemes emerging from the interviews. Findings indicated teachers' preference for hands on professional learning opportunities and technology use in delivery models. Teachers also expressed an interest in being given a choice in the delivery model of their professional learning opportunities. Implications for positive social change focus on professional development planners and facilitators, who are encouraged to seek preferences from teachers to best meet the needs and interests of educators in order to advance changes in teacher behavior and subsequent improvement to student achievement. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]