What is the primary purpose of classification guides?

The primary purpose of classification guides is to outline how to classify information and the levels of classification. These guides serve as essential tools for personnel who handle classified information, ensuring they understand the standards and criteria for determining what information should be classified and at what level (such as Confidential, Secret, or Top Secret). By providing clear guidance, classification guides help maintain uniformity and compliance with classification standards across different agencies and departments. This is crucial for protecting national security and facilitating the proper handling of sensitive information.

Unlike historical data references or monitoring distribution, which serve different functions, classification guides are specifically focused on the processes and criteria for determining the classification of information at the outset. Additionally, while they may touch on the duties of a classification authority, their main role is to clarify the classification process itself rather than defining those responsibilities.