This practicum was designed to develop learning experiences for teachers which would improve their ability to be accountable for children's progress in play-oriented educational programs. The primary objective was to increase teachers' competence with regard to knowledge about play, and their skill in assessing and reporting developmental progress revealed in play. Additional goals were to increase teachers' confidence in running a play-oriented, developmentally appropriate progam; in justifying and explaining such a program to critics; and in enhancing children's play in the program. The researcher administered a needs assessment questionnaire to teachers; developed a series of learning experiences based on research; carried out inservice for several groups of teachers amounting to about 250 persons in all; and developed and administered an evaluation component. Results of the practicum were positive. Data analysis revealed that teachers expressed increased confidence in their knowledge about play and their ability to assess and report it. They indicated that they felt more encouraged to run developmentally appropriate programs and to justify and explain such programs to those concerned about them. Recommendations for improvement of the project are suggested, and plans for future in-service programs are provided. A list of 66 references is included and related project materials are appended. (Author/GLR)