Annexation has played a major role in the politics of it here
Since 2013, when we were incorporated into the KCL, Sullivan County and KC buses run up and down my street...kids have a choice: DB or West Ridge now (was South)
Same where my youngest daughter and her kids live on Kendrick Creek Rd....had to get granddaughter today after swim practice at DB...she said there are four kids in her apartment complex (that she knows) who go to West Ridge, and the rest go to DB.
It's a mess, man.
I don't know how BC handled it when JC annexed them in terms of the kids having a choice in schools, but anything that was "grandfathered" about a kid graduating from the school where the kid started is long gone.