First of all, obviously you watched the official much more than you did the game, because only one child sat with that official not children. Yes, he does have children that attend Mont. Co schools. Should his children become unbiased due to the fact that their father happens to be a BBA official? Is it a crime that he takes his children to a game or two a year? Maybe that was the only game he could attend with his family this year because he was not officiating for a mere $55 a night. It's a shame that fans like you don't have more to worry about than whether an official who is not officiating attends ballgames. Are they suppose to be inhuman and not attend games when their local school district is playing in the regional finals? Yes as a Mont. Co. fan, had he been officiating that game last night I and I'm sure several other people would have been disturbed. Attending a game in which he is not officiating is not against KHSAA rules as I see many officials at games including the one last night. If you had looked closer in the stands you might have spotted a few other officials who were even proud enough to wear Mont. Co. "GARB".
The BBA only covers 2 regions, the 10th and 11th region, not 3 as you stated. The assigning secretary is fully aware of where each official lives. Referees have no say in where they are assigned for district and region games, or regular season games for that matter. That is decided with the help of coaches and the BBA assigning secretary.
Maybe you don't know this official very well. He has been around since the late 80's officiating in the 10th and 11th region and has done several regional finals the last few years. I'm sure the assigning secretary would not have placed him in those finals year after year if there had been a question about his integrity in those games or his ability to make the calls or even where he lived.
The officials stay in this region at the coaches' request. In the early 1990's officials were pulled in from other regions to call regional games if I remember correctly. The coaches were disappointed with that decision and wanted the BBA officials to stay here and call the regional games, as they are regarded as some of the best in the state.