This preliminary study examined how a professional development (PD) program supported Korean EFL teachers in integrating generative artificial intelligence (GenAI) into collaborative reading and writing instruction. Fifteen in-service secondary school teachers participated in an 11-session PD program that introduced GenAI-supported instructional models and guided teachers to adapt them through micro-teaching, reflection, and classroom application. Data were collected through pre- and postintervention surveys and three rounds of reflective journals. Quantitative findings revealed no significant improvement in perceived ease of using GenAI for collaborative reading. However, teachers reported significantly greater ease of use in collaborative writing, presentation, and form-focused instruction (FFI). Qualitative results identified recurring challenges—such as role imbalance, copy-and-paste reliance, and lack of scaffolding—which prompted teachers to revise the pre-existing instructional models into more structured ones (e.g., Expert Jigsaw Reading, role-based writing cycles). The findings demonstrate how PD programs can develop teacher agency by translating abstract GenAI principles into classroom-ready, pedagogically sustainable practices.

1. INTRODUCTION
2. LITERATURE REVIEW
    2.1. Potentials and Risks of GenAI in Language Education
    2.2. Collaborative Learning with GenAI: Potentials for Higher-orderCognitive Skills
    2.3. Professional Development and the Challenge of Classroom-levelImplementation
3. METHODOLOGY
    3.1. Participants
    3.2. Research Procedure
    3.3. Professional Development Program with the Initial Model
    3.4. Instruments
    3.5. Data Analysis
4. RESULTS AND DISCUSSIONS
    4.1. Responses to the Initial Model of Collaborative Reading in PDprogram
    4.2. Responses to the Initial Model of Collaborative Writing, Presentation,and FFI in PD program
5. CONCLUSION
REFERENCES
APPENDIX

• Rakhun Kim(Lecturer, Department of English Education, Hongik University, 94 Wausan-ro, Mapo-gu, Seoul 04066, South Korea)