Roughest driver’s ed class ever. A group of quick-thinking kids in Mississippi stepped up to stop their school bus after the driver passed out at the wheel — while they were on a four-lane highway. The students had just left the Hancock middle school in the Mississippi town of Kiln on Wednesday when bus driver Leah Taylor suddenly suffered an asthma attack and lost consciousness. Mississippi middle school kids were on the bus riding home when the driver had an asthma attack and passed out at the wheel. AP Kids leapt into action immediately. Sixth-grader Jackson Casnave, 12, who was sitting behind the driver’s seat, jumped up and grabbed the wheel when the bus started to swerve. “I didn’t have time to process my emotions,” Casnave said. “I just wanted to make sure nobody got hurt.” A classmate, 12-year-old Darrius Clark, hit the brakes and between them, they were able to get the bus off the road and put it in park. The kids didn’t hesitate a minute, but leapt into action and saved the day.…