How to print Inventory items by classroom?
In the View tab, select Group by. In the Classroom row, select the Folder symbol.
The Folder symbol will be highlighted and the items will be grouped by classroom. 
If you check the Show:Sum option, the total number and sum of items will be displayed below the list of items. Confirm.
Toggle the + or - button to expand or collapse the list of items for individual classrooms.
Select Quick Print, in the Quick Print window select Pagination - Classroom. The inventory will be printed by classroom, each classroom will start on a new page.
See more: 
How to use Mass change?
 
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