When picking up students at a stop, what should the driver do?

School bus pickup procedure: approach the stop slowly with the amber (yellow) warning lights activated about 200 feet before the stop, signaling that the bus is about to stop; stop in a safe location where students can board from the curb side (never from the traffic side); activate the red flashing lights and extend the stop arm, which legally requires traffic in both directions on undivided roads to stop; watch all mirrors continuously as students board; do not move the bus while students are entering or near the bus; only release the stop arm, retract the lights, and proceed after students are seated and the driver has verified no student remains in the danger zone. Many states require an additional 'count' or visual verification before resuming travel.