Yes, school car does indeed have am and pm classes. Unfortunately, you do not get to decide which one you want. AM one is like 7:30am~3:30pm and 10:30am~6:30pm. PM's are 3:00pm~11:00pm and 7:00pm~3:00am. These are the times you are with the instructors. Once you go to the yard for yx you work the shift of the job you are given. You will receive overnights(midnites) shifts once you leave your instructors to learn the yard and road operations. While in school car you will have sun-sat off. You may get a holiday off while you're still with your instructor but I don't think it's guaranteed. I think I remember getting Memorial Day off but not July 4th. Or we may have gotten both. Not sure. But like anything else in transit all of this is subject to change. Especially the times you meet with the instructors.