An AI could generate relevant questions, follow-up questions during the oral, and evaluate the student at the end. The teacher could then review the whole conversarion at a glance and check/adjust the AI evaluation, which shouldn't take more time than grading an exam and be equally scalable.
I've actually tested this with a VR app (with support for mobile also), and it actually works quite well.
I've actually tested this with a VR app (with support for mobile also), and it actually works quite well.