I was riding on a 4 lane road with a 4 foot bike lane on each side in a residential area going about 15 mph. As I approached a school a small bus was preparing to exit a driveway turning the right. There were no obstructions and I was wearing a hot yellow wind breaker but the bus didn't stop and continued out the driveway into my path requiring me to make a hard left to avoid hitting the bus. If I hadn't swerved I would have hit the buses front wheel. As it was I only missed the front bumper by less than a foot. The driver fortunately saw me going by and stopped as she might have run me over. WHAT WAS SHE THINKING?