Rural folk don't want help from your "our" because their situation is different than yours. What works for major metropolitan areas doesn't work for small or rural schools. In an area where likely career paths involve working on or inheriting the family farm or ranch, more urban-centric curricula don't make sense.
It's not that rural people in the US are more insular, it's that they need to be more independent. For instance, when the nearest ambulance may be an hour away, you learn to deal with emergency medical issues yourself, or you or your loved one die. When that ambulance cannot get to your house when the husband is having a heart attack, the wife somehow manages to get her husband into a vehicle to meet the ambulance somewhere the ambulance can reach. When the nearest sheriff is likewise an hour away when you call for help, if you even have 911, the sheriff is likely going to assume you have a shotgun, tell you to get it out, load it, and use it, if necessary.
It's not that rural people in the US are insular or unaware of the rest of the US, it's that their situations are entirely different from what city dwellers encounter. Ambulances, police and fire response aren't just a few minutes away. It can be hours before emergency services arrive.
And likewise, getting to even your local school that graduates at a HS level can take an hour or more. Getting to a college or university likely will take even longer.
edit: grammar, spelling, minor bit of clarity.