The lessons of the German written expression in SMA urges students not to express thoughts and opinions freely. So, they still write the steered written expression with the help of existing keywords. But we need some other alternative teaching when writing skills lesson, are strongly motivated. One of them is: "Technique Program to increase the writing skills of the students." In this technique, students are trained to use their own language skills to develop writing skills.Study problems (1) How the notes of the students before using the WINDOWS technique ? (2) How the notes of the students after using the WINDOWS technique? This study has three objectives, namely: (1) Describe the scores of the students before using the WINDOWS technique (2) Describe the scores of the students after using the WINDOWS technique. In this study, descriptive qualitative method can be used. Was the outcome of this study show that (1) the average score of the students is only 48, (2) the average score of the students is 70. The data from the study are "pre-test and post-test" . The results of this study show that an increase in writing expression gives the student through WINDOWS technology.