I'd like to know where Dobson grew up in order to have only one black kid in the entire school or grade. Regardless, it's still not an excuse for him to dwell on it.
You know, I like that you brought attention to this point, because I feel that it kind of correlates with the theories regarding his not actually being banned from the bus...rather, I think that the lack of minorities and the whitebread-ness of his school and (potentially) his district really drive home that perhaps his parents didn't let him ride it and just lied to him about it, or some other reason along those lines (i.e. that he didn't actually go ham enough to warrant a forever
ban, per se, and instead was just bullied mercilessly for being Andrew Dobson).
Now I'm not just gonna throw that point out without some sort of reasoning behind it, and here it is: communities do still exist where it's almost all white people and hardly any minorities. How do I know this? Why, because I went to one. Small towns in Alaska are generally more likely to have at least Alaska Natives, not less, but the town I went to was special in that regard: there was one Native family and one black kid in the whole school, and he was my little brother. We were a super-rural community (took the bus an hour and 15 minutes to actually reach the school after picking up all the kids) and as such I can't even remember any kids getting kicked off the bus for any length of time, even for the crazier things that some kids pulled. What I
do remember, though, are a couple kids who didn't ride because their parents didn't want them to because we were horrible children and either bullied them or corrupted them (lol there was a porno mag that some idiot brought on the bus because again, he's a moron) and since where there's smoke there's fire a lot of the time, I'm inclined to believe that his parents decided to shelter the shit out of him because he was a little dweeb who couldn't handle it, or maybe he had a titanic freakout, I dunno.
tl;dr: It is unlikely that a rural school district would issue a blanket forever ban on riding the school bus unless he tried to kill a kid or something (and it'd have to be a real attempt because lol kids).