Final answer:
Typically, drivers must stop and wait for a school bus when it is picking up or dropping off children, only passing at a very low speed (around 10 mph) if allowed, once the bus begins moving. Always follow local traffic laws for the safety of children.
Step-by-step explanation:
When a school bus has stopped in front of a school to pick up children, the rules regarding passing can vary depending on the state or country's traffic laws. In many jurisdictions, there are very specific guidelines about when and how you can pass a stopped school bus, with safety being the utmost priority. Typically, drivers are required to stop at a safe distance and wait until the bus's stop signal has been retracted and it begins to move before attempting to pass. The speed at which you can pass, if allowed, will often be at a crawl or not more than 10 mph, to ensure the safety of children entering or leaving the bus. It is important to always follow the specific traffic laws in your area regarding school buses to ensure the safety of children.