Sistem pembelajaran jarak jauh di masa pandemi COVID-19 menjadi tantangan bagi guru untuk mengajar secara efektif. Penelitian ini ingin menguji peran dan efektivitas guru. Hasil penelitian mengimplikasikan bahwa guru perlu memiliki Distance learning as an impact of COVID-19 pandemic becomes a challenge for teacher effectiveness. The current study examined the role of psychological capital as a mediator of the relationship between openness to experience and teacher effectiveness. This study involved 172 senior high school teachers in Jabodetabek as respondents who are currently conducting distance learning. The mediation analysis results revealed a significant indirect effect between openness to experience and teacher effectiveness through psychological capital, [.668, 1.369]. These findings prove that psychological capital mediates the relationship between openness to experience and teacher effectiveness. Therefore, teachers should have high openness to experience to increase psychological capital so teacher effectiveness will also increase.