How do I make sure that I don't order costumes for students who dropped after they were auto-sized?

When a student drops after costumes have been assigned to classes and sized, Jackrabbit does not change their costume status to Do Not Order.  A Jackrabbit User should go to the Class page > Costumes tab > Costume Sizes button to check the Do Not Order checkbox. Prior to creating orders, we recommend you run Reports > All Reports > Drop History and find dropped students to mark as Do Not Order when needed.

Note also, that when a student drops (or is a future drop) Jackrabbit color codes the Class Costume Size Entry page for visual assistance.