A safety portal system for use in existing building, such as schools. The safety portal system includes a first portal section. The first portal section includes a first wall and a second wall, a first open end, a floor portion and a ceiling portion, the at least one open end defined by an outer edge. In addition to the first portal section, the safety portal system includes a second portal section. The second portal section includes a first wall and a second wall, at least one open end, a floor portion and a ceiling portion. The at least one open end of the second portal section is defined by an inner edge that cooperates and engages with the outer edge of the first portal section to create a protective overlap section. A method of installing the safety portal system includes positioning the safety portal system in a desired building and assembling the safety portal system. The safety portal system can then be secured in its desired location within the building.