For This year (Current school year)
Go in Setup > Class info > Rooms > select the room you want to delete, click and select Edit
Once Edit, go to the trash can > click on it > select delete.
In the case the trash can is greyed out – see the information below.
For Next year
In Scheduling Next year > Class info > Classes > Rooms > select the room you want to delete, click and select Edit
Once Edit, go to the trash can > click on it > select delete.
In the case the trash can is greyed out, that means the Room is assigned either to a class or to a Homeroom.
You will need to verify to what it is assigned:
1. Go in to Scheduling next year > Classes > Classes > search for the class that has that room number > remove the room number > SAVE OR
Go in Scheduling next year > Homerooms > Homerooms > GO > search for the Homeroom that has that room number > EDIT > remove the room number /modify it > SAVE
(As example it is the Homeroom that has it - we modify the room from 203A to 101)
2. Once completed, go back to Scheduling Next year > Class info > Classes > Rooms > select the room you want to delete, click and select Edit > Click on the trash can