Joko Robianto et al. 2026. Evaluation of a Performance-Based Teacher Competency Development Program through the Ruang GTK Platform at SMKN 1 Sengah Temila. Attractive : Innovative Education Journal. 8, 2 (Aug. 2026), 205–222. DOI:https://doi.org/10.51278/aj.v8i2.2586.