The bus drivers in that school district have the addresses of the kids ? Have a friend who drives a school bus here in Seattle. She does not have any addresses, and can actually get put on suspension if she deliberately goes off route.... MOO
I'm kind of wondering about this too because I looked at the bus route, and the bus travels in the opposite direction of Sierra's house (I.e., the bus driver would pass Sierra's street before reaching the bus stop). The next bus stop is at the next intersection after Sierra's (so a block away). Depending on the terrain, etc, I would think those kids could maybe see the bus as it pulls up to Sierra's stop (if there are kids there). It would be awkward for the bus to come to Sierra's stop, turn around in possible full view of the kids at the next stop, and backtrack to Sierrra's house. I guess it's possible, but seems a little unlikely to me.