Abstrak
Writing is one of the important skills in English that is often difficult for students, especially in composing descriptive texts. Therefore, it is necessary to implement creative and effective learning strategies. This study aims to find out how much influence the brainwriting strategy has on the ability to write descriptive texts of grade XI students at SMAN 3 Tarakan. This study uses a pre-experimental method with a one-group pretest-posttest design. The subject of the study was grade XI students of SMAN 3 Tarakan, with a sample of 34 students from grades XI-D. The data collection instrument is in the form of a written test consisting of a pre-test and post-test. Data analysis was carried out using the SPSS version 23.0 program. The results of the analysis showed that the average pre-test score was 48.12 and increased to 66.98 in the post-test. Based on the results of the paired sample t-test, a significance value of 0.000 was obtained, which means it is smaller than 0.05. This indicates that the alternative hypothesis is accepted, while the null hypothesis is rejected. Thus, the use of brainwriting strategies has proven to be effective in improving the descriptive text writing skills of grade XI students at SMAN 3 Tarakan.