Whether or not the film was actually filmed at Jefferson does not matter. Those of us who went to Jeff always enjoy the notoriety this movie brings. Definitely a "B" movie, it is still worth watching.
It is a predictable movie and is steeped in the innocence off the era. The voting into the Lassos is questionable and definitely too much like sorority pledging to be from a high school.
This is the only movie I remember seeing Jane Withers in. She was a commercial actor in my day. She did a good job playing the likely role of a ranch girl coming to San Antonio to go to school. There are still ranches within the city limits of the city.