The purpose of this research is: (1) to find out whether there is a significant difference in writing skill between students that are taught using dialogue journal writing and students that are taught using guided writing; and (2) to find out whether dialogue journal writing method is more effective than guided writing method to teach writing. The research was carried out at SMPN 2 Sawit in the academic year of 2017/2018. The population of the research is the second grade students of SMP N 2 Sawit. The sample are class VIII A which was selected as the experimental class which consists of 30 students and class VIII B was selected as the control class which consists of 30 students. The research instrument that is used to collect the data in this research is test. The researcer used t-test formula to analyze the data. The result of computation of the t-test indicates that t observation (to) = 2.2093 is higher than t table (58, 0.05) = 2.0017.  It can be concluded that there is a significant difference in writing skill between the students that are taught using dialogue journal writing and the students that are taught using guided writing. The mean score of the experimental group is 71.90, while the mean score of control group is 68.66. As a result, it can be concluded that dialogue journal writing is more effective than guided writing to teach writing.

Keywords: dialogue journal writing, guided writing, writing skill.