Texas flag
I haven't seen the whole movie, so am not sure if there's an earlier scene, but towards the end of the movie they show a school (I presume it was one that Morris attended) with the U.S. flag flying above the Texas flag on the same pole.
I seriously doubt this was shot in Texas, because every school I know of (in Texas) has two flag poles - one for the American flag and one for the state flag of Texas, which is the ONLY state allowed to fly its flag at the same height as the U.S. flag. Texans are extremely proud of this, and, as I said, I doubt any state school wouldn't have a separate flagpole for the state flag.