Asrin, Happy Fitria, and Syaiful Eddy. 2021. “The Effect of Teacher Competence and the School Environment on Student Achievement of SD Negeri Kecamatan Jirak Jaya”. Jurnal Pendidikan Tambusai 5 (3):5582-87. https://doi.org/10.31004/jptam.v5i3.1754.