They can ask questions and be there for when students need help. They can help them or pull them to the side if help is ever needed
Athens was the polis run by democracy; (basically the voice of the people.) With this, all the citizens gather and discuss/decide major issues and nominated the officials.
Sparta was run by 2 kings and geruisa as a form of council body and was very much a militarist dictature state.
Prohibition would have failed regardless of the atmosphere, because people like to drink alcohol. The permisive attitude of the times (mild compared to today) meant there was little social stigma attached to those who ignored prohibition. People finally came to realize that all they did was stregnthen the mob and lose tax revenues with Prohibition.