I'm looking for a way to force my students to stay in creative mode. They clearly know more than I do about Minecraft, and are regularly picking on each other. If I disable cheats, then I am not able to teleport, change the weather/light/etc. One of my students took over and dug a hole, created some blocks, typed some cheats, and told me that when kids switched to survival mode they would automatically be changed back.
I'm sure this is a simple/noob question, but I thought someone here would know how to handle this.