This article explains how the media literacay ecosystem should be run in Indonesia high schools. Based on the 2022 PISA report, the levels of mathematics, reading, and science are quite low. Seeing this fact, the Ministry of Education and Culture created the School Literacy Movement (GLS) program, which aims to increase the literacy level of school students. The journey of the GLS program itself is different for each school, including its challenges and potential. In the current situation, it is necessary to apply new approaches, techniques, and methods to the education system at different levels in order to develop students 21st century skills that are in demand in a modern technological environment. Therefore, we researched how GLS was implemented at SMAN 106 Jakarta and SMA GAMA Yogyakarta. The reason we chose these two high schools is that Jakarta and Yogyakarta are areas with good literacy levels. After we conducted a focus group discussion (FGD) with the school, we discovered a number of challenges and potential for implementing GLS from these two schools to other schools. Based on the results of the discussion, we created a literacy development model in schools to become an alternative reference for other schools. © 2024 by Cherkas Global University.