This study aims to determine the increase in scientific literacy skills in the competence domain of students through the PBL model assisted by google classroom. This type of research is a quasi-experimental study using a pretest posttest control design. The study population was all students of class XI MIA MAN 1 Yogyakarta. The sampling technique used simple random sampling. In this study, the sample used was students of class XI MIA 1. The data collection technique used was a test. Assessment of scientific literacy skills was obtained through a essay test consisting of five questions. There are three indicators of scientific literacy in the measured competency domain, namely identifying scientific issues, explaining scientific phenomena, and using scientific evidence. The data analysis technique used is the n-gain test. The results showed that the increase in students' scientific literacy skills was in the medium category