This study explores the feasibility of integrating curriculum, instruction, and assessment in elementary art education using the GRASPS framework. While the 2022 revised curriculum emphasizes this integration for deep learning, a lack of specific methods hinders practical teacher application. In response, the Gyeonggi Provincial Office of Education developed the “In Depth Lesson Framework,” proposing GRASPS as an assessment method. Our study developed a fourth-grade art unit and analyzed two GRASPS-applied cases, examining their organic linkages among curriculum, instruction, and assessment. Results showed systematic GRASPS application significantly contributed to curriculum, instruction, and assessment integration via increased student participation. These findings suggest the practical applicability of GRASPS in art education, offering key implications for classroom innovation.