This research was aimed at knowing (1) student’ writing level in second
grade of SMP Muhammadyah 3 Purwokerto (2) the types of students’ writing
error included the percentage of each type of error. The method used in this
research was descriptive study. In analyzing the error, the steps were collecting
data, identifying or classifying error, ranking the error, and explaining error. The
population of this research was all of students in second grade which consisted of
112 students. 30 % of the population or 34 students were taken as the sample. The
sample was chosen randomly. The data was taken through an essay test. The
students were asked to write a daily activities. The result of analyzing the data
could be concluded in the following. Firstly,the students’ writing ability in SMP
Muhammadyah 3 Purwokerto at grade VIII belonged to enough category, as the
mean score of the students was (60.44). Secondly, The type of error was divided
into grammatical error and lexical error. Error in gramatical reached 157 deviation
whereas, error in lexical reached 63 deviation.