Actor Melissa Joan Hart says she helped a class of kindergartners that was fleeing the school shooting in Nashville earlier this week. Hart said in a video posted on Instagram Tuesday that her children attend a school next to the private Christian Covenant School. Hart said she and her husband were headed to her kids’ school conferences Monday when they helped some students get away from the shooting that killed six people. She said they "helped all these tiny little kids cross the road and get their teachers over there, and we helped a mom reunite with her children.”