How to be cool at school?

Coolness is an admired aesthetic of attitude, behavior, comportment, appearance and style influenced by and a product of the Zeitgeist

The Zeitgeist (spirit of the age or spirit of the time) is the intellectual fashion or dominant school of thought that typifies and influences the culture of a particular period in time.

Choose the method of your being cool wisely, Grasshopper.

Some styles may be "cool" and yet meaningless.