I don't think it's his remote. I tried two other remotes with the teacher's overhead projector and the remotes were either sluggish or entirely unresponsive in their delivery of on/off commands.
At one point, I pressed the 'power' button 17 times, from 12 different angles/trajectories. I am part compass, part protractor. Geometry with size 8 1/2 feet.
I tried all buttons, even the button that has the text 'please don't press this button as it is the psychological experiment revolving around explicit cautionary statements against one's innate curious desire to press buttons'. Nothing happened; although, in truth, I think an island somewhere in the South Pacific amazingly relocated to an as yet undisclosed location.
Tried the new batteries that your staff gave me in the other two remotes as well. I even ate one of the batteries, pressed incessantly against my right ear lobe, and hoped it might be able to communicate with the overhead projector. I have a deep cartilage contusion, like a botched ear-piercing procedure. My stomach hurts.
What else is a guy to do?