Not sure where you live, but here's the law for Utah (where I live):

(3) The operator of a vehicle need not stop upon meeting or passing a school bus displaying alternating flashing red light signals if the school bus is traveling in the opposite direction when:

• a) traveling on a divided highway;
• b) the bus is stopped at an intersection or other place controlled by a traffic-control signal or by a peace officer; or
• c) on a highway of five or more lanes, which may include a left-turn lane or two-way left turn lane.

Note how it only specifies driving in the opposite direction of the bus.

Source: https://le.utah.gov/xcode/Title41/Chapter6a/41-6a-S1302.html