This document outlines the guidelines for cancelling or suspending classes and work in government offices due to typhoons, flooding, and other weather disturbances according to Executive Order No. 66. It describes the different storm signal levels from PAGASA that automatically result in class cancellations at preschool, elementary, and secondary levels. It also allows local chief executives to cancel classes in the absence of storm signals. The guidelines indicate make-up classes will be scheduled to offset cancelled days and that schools may serve as evacuation centers even when classes are suspended.