Based on the implementation of the new curriculum with GBA, this study investigates the effectiveness of GBA implementation in students'' writing skills through procedure text. This study took 41 seventh grade students of SMPIT Al Falaah Simo. This research used descriptive analysis to serve data analysis. It applied quantitative method that collects data through pre-test and post-test. Students were given a task to make procedure text about food creation of instant noodle. From the findings of the T-Test and N-Gain results, it is known that the application of GBA through Procedure text provides a significant change at the intermediate level in students'' writing skills. This means that the increase in skills has increased by about 50% of the skills in writing procedure text before the treatment. The T-Test and N-Gain results showed that the application of GBA through Procedure text provided a significant change in students'' writing skills in moderate stage. Factors such as mental unpreparedness, lack of material books, lack of time, and limited media facilities caused the increase in skills.