He would not be allowed to ban drinking fluids during class. Teachers in public schools have been forced to progressively bend the knee to students over the last two decades. I've heard of schools that are not allowed to ban the use of cell phones during class. Also, saying pop means you're likely from the Midwest - https://i.insider.com/5bb5154476545336f90c5cf6?width=700&format=jpeg&auto=webp