Where should classified documents be marked to show the highest overall classification level?

Classified documents must be marked appropriately to convey their highest overall classification level clearly. The correct approach is to mark the face and back cover, as well as the top and bottom center of the document. This ensures that anyone handling the document at any point can easily identify its classification level without needing to open it. Effective marking is essential for maintaining security and ensuring personnel recognize the sensitivity of the information contained within.

When classified materials are denoted in such prominent locations as the covers and top/bottom centers, it minimizes the risk of unintentional exposure to unauthorized individuals. This practice aligns with established policies and guidelines for the handling of classified materials, reinforcing the importance of visible and consistent marking.

Marking only the inside margins, the spine, or just the first page does not provide the same level of visibility or assurance that individuals will recognize the document's classification immediately. These lesser-marked options do not adequately convey the classification status to those who might only see the document's exterior, thereby increasing the risk of mishandling classified information.