Police say someone hit a school bus with their van yesterday and then took off.  It happened at around 3:15 near Angel and Lafayette Street.  The bus was stopped at the train tracks with 14 children on board when they were rear-ended.  No one on the bus was injured.  The driver of the blue mini-van then drove off; he is described as a white male in his 30’s.  Anyone with information is being asked to contact police or Silent Observer.