This researcher had two purposes. The investigator's purpose in this action research was to develop a working prototype of a music teacher digital portfolio within the Moodle environment, which included artifacts, as they relate to New York State's Annual Performance Review (APPR) legislation. The regulation on teacher evaluation is New York State Code §3012-c. In order to develop the prototype, a first step involved working collaboratively with a panel of instructional leaders in music education to determine what a music teacher digital portfolio template should contain as per this new APPR Legislation. To achieve this goal in an open source course management system, Moodle was used to collaborate digitally with music education leaders from New York State. This researcher did not seek to establish rubrics for assessment. At the same time, however, by presenting artifacts as they relate to the APPR legislation, §3012-c, the investigator presented prototypical evidence of quality teacher performance in student growth and student achievement, and these data entries may be used as a point of reference by supervisors who evaluate professional music educators. The report of this study took two forms: there is a report of the collaborative efforts that constitute action research and there is the presentation of the portfolio prototype. The subjects were 12 instructional leaders in music education from Long Island, New York. Upon completion of the action research, the subjects completed a questionnaire designed to measure their perceptions of the action research study method of instruction and the use of a course management system (Moodle) as a tool for the construction of digital portfolios. The results of the questionnaire showed that both purposes were achieved. Furthermore, a consensus was developed that the use of action research study is a valuable method of learning and a course management system, Moodle, is an effective and useful administrative tool for school administrators. [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://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]