I like to number my tables in the classroom so I can call up different groups at a time for different things. Ex: "Table 1 go get your portfolios!" So the kids always know their table numbers, in the past I have the tables labeled - I'd type out a number and tape it to the table or I'd print labels/stickers and place them on that way. No matter what, it never fails, either the students start to peel them off (even when I specifically say not to) or just normal wear and tear, they begin to peel off. Is there a way to successfully label the desks without the labels peeling (till at least semester's end) or without using a permanent marker?