In all 1.3 million children were moved—with their teachers but not their parents.[107] When the American bombing began in earnest in late 1944, 10 million people fled the cities to the safety of the countryside, including two-thirds of the residents of the largest cities and 87% of the children. Left behind were the munitions workers and government officials. By April 1945, 87% of the younger children had been moved to the countryside.