Mass notification is a high priority in educational institutions. As the number of electronic communication devices has diversified, so has the complexity of designing an effective mass notification system. Picking the right system, with the right features, support services and price, can be daunting. This publication, updated quarterly due to rapid changes in security technology, discusses essential considerations when designing a campus-wide mass notification system, and the pros and cons of current notification systems. (Contains a list of related resources.)