The objective of the present study was investigating the effect of inverted teaching on EFL student teachers' teaching performance. Fifty-four EFL student teachers studying the Lesson Planning course at Jubail College of Education, Imam Abdulrahman Bin Faisal University participated in the study. They were pretested in teaching performance, then inverted teaching was implemented, finally all participants were posttested in teaching performance. Statistical analysis showed a significant improvement in the teaching performance of the participants (t=7.6611, p<0.05) between the pre and post measurements in favor of the post measurement. Accordingly, the researchers concluded that inverted teaching is significantly effective in improving the teaching performance of EFL student teachers.