CLIO ONLINE, one of the biggest publisher of digital materials for the elementary school market in Denmark, has sold a majority stake to Bonnier Business Press, a part of international media conglomerate, Bonnier AB. Terms of the deal were not disclosed. Founded in 2006, Clio Online offers digital assessments, content and lesson planning tools to approximately 2,000 school customers, "including 75% of all Danish primary and lower secondary schools." More details in the release.