Some NSW schools has classes names imported with alpha-numeric display. 

E.g. KB01010 

To change this so they appear in a more simplified and meaning manager in Attendance and academic reports for example go to Sentral Setup Cog > Data Sources > Manage Roll Classes  

• This interface will only show roll classes with students linked to it.
• Any overrides set in this interface will only take effect after a Data Synchronisation.
• Data Synchronisation is run every night. If you want the changes to take immediate effect in Sentral please click Sync Roll Classes button after the overrides are set
• Set Overrides for each roll class and rename the class/es and Save.