In this study, the transformational play approach was further used to deploy drama-based situational learning in the classroom through the Digital Learning Theatre (DLT) by engaging drama performers and the audience collaboratively. This study analysed the learners' learning effectiveness based on translation and sentence-construction abilities, and their perception by focussing on concentration, and comprehension of dialogues before and after the drama-based activity. The experimental results were based on both the DLT including tablet PCs to enable audience participation in drama performances, and the DLT for drama performances in which the audience can participate through traditional open discussion sessions with the narrator of the drama. Sixty-five students were selected randomly as participants from the English as a Foreign Language academic program at the junior high school level. The application of the DLT including the tablet PCs approach showed considerable improvement in students' learning effectiveness as well as a significant positive effect on classroom learning, outperform the effectiveness of the DLT with traditional open discussion sessions for the audience. Accordingly, to improve students' learning effectiveness, their engagement in the learning process can be advanced through situational learning activities using educational technologies that combine with collaborative learning mechanisms for classroom learning.