K12 isn't a missing element from the periodic table, but it could help kids learn about the periodic table. The company offers online educational programs to students in kindergarten through 12th grade through "virtual schools." It also offers online curriculum to public and private schools. It provides course material and product sales directly to parents and individualized supplemental programs offered through schools. K12 also manages and sells its products and services to blended schools (public schools that combine online and face-to-face instruction), and provides services to US school districts and to international partners. K12 was founded in 2000.