There are three principal roles:

As well as different level of delegate actions.

At the heart of the class:

At the section level:

One class representative per class must:

At the faculty level:

Class representatives may also choose to sit at the Faculty Council. Member of the Faculty Council are elected at the end of the academic year. Any students can be elected to sit at the Faculty Council.

At the EPFL level:

The list of delegates is available here.

You should be aware that your role is of the utmost importance to the school and your efforts will officially recognized and written down on your Diploma Supplement at the end of your studies.