United States Department of Homeland Security - National Terrorism Advisory System. 1  In 2011, the Department of Homeland Security phased out the old Homeland Security Advisory System, replacing it with a two-level National Terrorism Advisory System. The system has two types of advisories: Alerts and Bulletins.
MIAMI-DADE COUNTY PUBLIC SCHOOLS TO RE-OPEN ON MONDAY, JAN. 7. All Miami-Dade County public schools and administrative offices will reopen on Monday, January 7, at their regularly scheduled times.
System maintenance will be performed on Saturday, March 18, 2017 at 6:00 a.m. through 6:30 p.m. on Sunday, March 19, 2017. During this time, there will be intermittent access to Dadeschools.net and portal applications. We are committed to providing first-class service and apologize for any inconvenience this may cause.