This study aimed at investigating the effectiveness of using debate to enhance secondary students' oral presentation skills of a group of 24 secondary students from a Cairo language school. The quasi-experimental design, called the one experimental group design, was employed in the present study. A pre-post oral presentation assessment rubric was employed to assess the EFL oral presentation skills of the experimental group before and after the treatment. The results revealed that there was a statistically significant difference between the mean scores of the students on the pre-post application of the oral presentation observation checklist favoring the post application. This proved that using debate developed participants' oral presentation skills. Debate can be engaging and interesting to all students, at the same time, be used as a medium to help students develop a wealth of higher order thinking and oral presentation and communication skills. Learning to debate may be one of the most important skills that today's students will need for the future.