This qualitative, phenomenological case study addresses a notable gap in the existing research literature on the impact on the end-users of a creativity training course with a simulated field experience to support public school teachers' creativity development. Specifically, the study examined the phenomenon of creativity of two K-12th grade public school teachers enrolled in a Master of Arts in Education degree program in Gifted Creative and Innovative Education. These teachers engaged in a four-week online creativity training course, including a mock field experience integrated into their mandatory coursework. In the 21st Century, creativity stands as an essential skill, yet few studies have examined the perceptions of public school teachers regarding cultivating creativity in U.S. classrooms. This case study aims to explore the pedagogical approaches and classroom strategies employed by public school teachers in relation to creativity. Specifically, it seeks to understand the impact of a creativity training course with a mock field experience has on teachers' perceptions of creativity within the context of their real-life setting using the following guiding questions as its framework: (a) What were the post-training perceptions of creativity among the teacher participants? (b) In what ways did the teacher participants apply creative techniques to foster creativity among their students in their classrooms after completing the training? (c) What opportunities and challenges did the teacher participants encounter when integrating creativity into their teaching and classroom environment following the creativity training? (d) How did the mock field experience component of the creativity training influence teacher participants' perceived abilities to nurture creativity in their students? [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.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]