The objective of this document is to provide information on security (delayed forced entry) glazing options for windows and doors installed in schools. It is important to determine the assets, the potential threats and hazards, and the level of vulnerability in order to know what level of testing or certification is required, before specifying the glazing. Many test standards are available to determine the suitability of glass for safety applications. This document is a guide to the standardized methods recommended and used by the glass industry. This document was published in 2021.