Add another layer of safety to a school field trip by having students carry a school name tag vs. their own name. Strangers don't need to know student's name to help him/her, the school and teacher information should be enough. Size of name tag is approximately 3 x 5 in. and if printed on yellow tagboard, it is likely to stand out as students wear them pinned to their shirts. Just print and fill in the blank lines with a broad tip pen and then laminate for durability.