You are in preparation in Scheduling next year and you would like to delete all your classes for Next year in your Class file. 



To delete all classes for Next year, the first thing you will need to ensure is to "Initialize Next year" at school level. 

Once that process is completed, you will go to Scheduling Next year > Classes > Classes > GO 


Then in Next year > go to the Ellipse (3 dots) > select "Delete all classes"