Teachers' beliefs are very influential in the success of learning in the classroom. The teacher is the person who knows best how to successfully use learning materials to achieve learning objectives. This study aims to explore how teachers' beliefs in Javanese language learning materials in the local content curriculum, especially for the Central Java region. The method used in this research is qualitative method. Data obtained by questionnaires and Focus Group Discussion (FGD). Data analysis is carried out by grouping the teachers' beliefs points towards the Javanese language teaching material. The results show that more than 70% of teachers believe that the Javanese language teaching materials contained in the local content curriculum are too difficult for students both in terms of language and content. Meanwhile, based on the FGD analysis of curriculum documents and Javanese textbooks, it is also found that some teaching materials are not in order and are not in accordance with the development of students, thus making students find it difficult to understand the material. This causes the learning objectives of the Javanese language tend to have not achieved maximum results. The results of this study can be a recommendation for stakeholders to evaluate the curriculum.