<![CDATA[This study was motivated by the low level of self-directed learning accountability among Grade VII E students of SMP Negeri 11 Madiun in Indonesian language learning, particularly on the topic of letter texts. The study aimed to improve students' self-directed learning accountability through the implementation of the Self-Directed Learning (SDL) model assisted by the Literacy Detective Passport. This study employed Classroom Action Research based on the Kemmis and McTaggart model and was conducted in two cycles involving 31 students. Data were collected through observation, documentation, field notes, and learning outcome assessments, and were analyzed using descriptive qualitative and quantitative techniques. The learning process integrated the Literacy Detective Passport, differentiated instruction, the Help Desk as a scaffolding strategy, and the Key Envelope as a medium for self-assessment and self-correction. The findings revealed a consistent improvement in students' self-directed learning accountability. The mean accountability score increased from 62.85 in the pre-cycle to 74.71 in Cycle I and 83.13 in Cycle II. The percentage of students achieving the good and very good categories also increased from 67.74% in Cycle I to 90.32% in Cycle II, exceeding the predetermined success indicator. These findings indicate that the Self-Directed Learning model assisted by the Literacy Detective Passport is effective in enhancing students' self-directed learning accountability while strengthening their responsibility, academic honesty, reflective ability, and independent learning skills is in learning letter texts.]]>
