This study aimed to develop an authentic assessment rubric based on HOTS learning Activities for EFL Teachers in 6th grade of the elementary school in Buleleng Regency. These activities were developed based on the syntax of 21st-century learning models such as discovery-based learning, problem-based learning, project-based learning, and task-based language learning method. The design and development method was used as the research method. The research model consisted of four phases which are Analysis, Design, Development, and Evaluation. Teachers and students in 6th grade of elementary school were the subjects of this research. Researchers developed the rubrics based on the blueprint which considered schools' syllabus. The data for the analysis phase was obtained from teachers' and students' interviews, document studies, and lesson plan observation. The analysis result showed that authentic assessment rubrics were needed for teachers and students. The expert judgments categorized the rubrics as excellent media. It is hoped by using authentic assessment makes students possible to perform related skills which are needed in real life.