I often wondered if Texarkana was even that good, you're talking about a team who barely beat in Arkansas program. Looking over their district it's not very strong. They may be really good, but I don't see all their credentials behind a high ranked team.
Texas High has some nice wins they beat the best private school in the state and the best team in Arkansas who would be a good 6A team in TX (2800 enrollment), they also drilled a district champion Midlothian Heritage...they've got some big time skill talent