What assessment would be most appropriate for measuring a student's agility?

The Illinois Agility Run Test is specifically designed to measure a person's agility, which is the ability to quickly change direction while maintaining control of one's body. This test involves running a specified course that includes straight runs and sharp turns, thereby evaluating how effectively a student can navigate obstacles and change direction rapidly.

In contrast, the beep test measures cardiovascular fitness rather than agility, as it evaluates aerobic endurance through paced running. The vertical jump test assesses lower body power and explosiveness, not agility, since it focuses on vertical height rather than directional velocity. Lastly, the push-up test is a strength-based assessment that measures upper body strength and does not relate at all to agility.

Therefore, the Illinois Agility Run Test is the most appropriate assessment for measuring a student's agility, as it directly targets the skill of changing direction quickly and efficiently.