Abstract :
Writing report text is one of the challenging activities for Students in learning English. This study aims to describe and analyze the types of errors in students? assignments. In the analysis, the researchers analyzed students' grammatical errors based on Betty's types of errors.
The subject of this research is students of the twelfth grade of Tata Busana 1 which consists of 35 students. Based on the problem of this research, the researcher wants to know the grammatical errors that students make. The research was conducted in SMKN 2 Sewon. To collect the data, the researcher used documentation of the writing assignment about the report text, then the researcher analyzed the data based on Betty?s strategy to find out and calculate the most frequent errors to know the highest types of errors. The researcher used triangulation data to validate the research. After analyzing the data, the researcher gave the result to the English teacher to check the result.
The result shows that Betty's strategy for analyzing student writing errors identified fourteen types of errors . However, in this study, researchers only focus on the three error categories.The students' most common errors were spelling, capitalization, and punctuation. The number of errors is 34% for spelling, 18% for capitalization, and 17% for punctuation.