Class Reps and the SUMG are part of the Student Union voice/politics.
Class Reps are class representatives that represent individual classes and the SUMG represent departments. To become part of the SUMG you need to first be a Class Rep.
The SUMG stands for ‘Student Union Management Group’. This is a group of members that represent departments of the college like engineering and photography. You’ll know more about the SUMG in the class rep meetings.