What does a Classification Guide provide guidance on?

A Classification Guide is a crucial document that outlines the specific criteria and procedures for determining the classification level of information. It helps personnel understand how to evaluate the sensitivity of information and decide whether it should be classified as confidential, secret, or top secret, based on established standards and national security interests. This guidance is essential for ensuring that information is appropriately protected according to its potential impact on national security if disclosed without authorization.

In contrast, assigning personnel security clearances involves different processes that are not directly related to how information is classified, as does conducting background investigations, which evaluate an individual's suitability for access to classified information. Managing information technology security pertains to protecting digital systems and data, rather than the classification of information itself. Therefore, the focus of a Classification Guide is specifically on helping individuals identify and handle classified information correctly.