Stop means Stop.

Noticed that a lot of people do not know what a stop sign is. What I mean is that many do not know that a stop sign on a school bus is still a stop sign. I am not the police and I cannot arrest you, but it's damn common sense. Even if you're on the opposite side of the road, you HAVE to stop. It's the law. And if it wasn't it is still a must. If a little kid jumps in front of your car when the bus' stop sign is up and you hit him or her, you will definitely go to prison. Not to mention you will have that on your conscience for a very long time.

In conclusion, red stop sign on bus means stop, not go around.