door if you can not lock it. turn out the lights and stay away from and lower than the windows.
dial 9-1-1 on your office/classroom phone or cell phone if possible.
if it is possible to talk, give shooter's location and description. just the hope we need to take us through more difficult times. there are grey and rainy days forecast, but the little yellow flowers will still be in bloom! try looking around you and see what you can see that truly lifts your heart. 