K12 extension stands for Education domain. You have chance to open these files with Internet Explorer and Firefox.
For reaching domain names which for internet web pages, com, net or org kind of extensions should be used. All the extensions have different meanings.
k12 is a domain name for the first and secondary schools.
What to use k12
internet explorer, firefox
which page related to k12 file
k12 Related Searches
You can check related links about k12 fileextension.