How do I set the preferred wireless network in Linux Mint 17?

It seems that this has been a common request for at least the last five years, but progress is slow.

You could always ditch Network Manager and manually control your Wi-Fi network by configuring wpa_supplicant to priorotise your network. Details here, but it seems a lot of work. It would also mean manually scanning for and configuring each new network you come across.

You could untick the automatic connection option under the 'General' tab of OrganizationFoo, so it would only automatically connect to other Networks including OrganizationFooSubSet - the problem here is that it won't connect to OrganizationFoo automatically when it is available, you will have to do that manually.

                                        

I feel silly answering a 6 year old question, but the fix is easier now. You can raise the connection priority for your preferred network by changing the general setting.